diff --git a/common/src/address.rs b/common/src/address.rs
index 8dee236c259..4a8b19d1f2f 100644
--- a/common/src/address.rs
+++ b/common/src/address.rs
@@ -9,6 +9,7 @@
 
 use crate::api::external::{self, Error};
 use crate::policy::INTERNAL_DNS_REDUNDANCY;
+use daft::Diffable;
 use ipnetwork::Ipv6Network;
 use oxnet::{Ipv4Net, Ipv6Net};
 use schemars::JsonSchema;
@@ -273,12 +274,19 @@ pub const SLED_RESERVED_ADDRESSES: u16 = 32;
     Eq,
     PartialOrd,
     Ord,
+    Diffable,
 )]
 #[schemars(rename = "Ipv6Subnet")]
 pub struct Ipv6Subnet<const N: u8> {
     net: Ipv6Net,
 }
 
+impl<const N: u8> std::fmt::Display for Ipv6Subnet<N> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.net.fmt(f)
+    }
+}
+
 impl<const N: u8> Ipv6Subnet<N> {
     pub fn new(addr: Ipv6Addr) -> Self {
         // Create a network with the compile-time prefix length.
@@ -302,6 +310,14 @@ impl<const N: u8> From<Ipv6Network> for Ipv6Subnet<N> {
     }
 }
 
+impl<const N: u8> From<Ipv6Subnet<N>> for Ipv6Network {
+    fn from(net: Ipv6Subnet<N>) -> Self {
+        // Ipv6Subnet::new() asserts that `N` is a valid IPv6 prefix, so it's
+        // okay to unwrap here.
+        Self::new(net.net.prefix(), N).unwrap()
+    }
+}
+
 // We need a custom Deserialize to ensure that the subnet is what we expect.
 impl<'de, const N: u8> Deserialize<'de> for Ipv6Subnet<N> {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
diff --git a/dev-tools/omdb/tests/successes.out b/dev-tools/omdb/tests/successes.out
index 0d3c4203166..b6c37e6f52e 100644
--- a/dev-tools/omdb/tests/successes.out
+++ b/dev-tools/omdb/tests/successes.out
@@ -1552,7 +1552,10 @@ stdout:
 blueprint  ......<REDACTED_BLUEPRINT_ID>.......
 parent:    <none>
 
-  sled: ..........<REDACTED_UUID>........... (active, config generation 2)
+  sled: ..........<REDACTED_UUID>...........
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   ::/64
 
     host phase 2 contents:
     ------------------------
@@ -1591,7 +1594,10 @@ parent:    <none>
 
 
 
-  sled: ..........<REDACTED_UUID>........... (active, config generation 2)
+  sled: ..........<REDACTED_UUID>...........
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   ::/64
 
     host phase 2 contents:
     ------------------------
@@ -1676,7 +1682,10 @@ stdout:
 blueprint  ......<REDACTED_BLUEPRINT_ID>.......
 parent:    <none>
 
-  sled: ..........<REDACTED_UUID>........... (active, config generation 2)
+  sled: ..........<REDACTED_UUID>...........
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   ::/64
 
     host phase 2 contents:
     ------------------------
@@ -1715,7 +1724,10 @@ parent:    <none>
 
 
 
-  sled: ..........<REDACTED_UUID>........... (active, config generation 2)
+  sled: ..........<REDACTED_UUID>...........
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   ::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-add-sled-no-disks-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-add-sled-no-disks-stdout
index 19e1a7a3cf0..0e7584d3ea5 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-add-sled-no-disks-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-add-sled-no-disks-stdout
@@ -57,7 +57,10 @@ planning report:
 blueprint  8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 parent:    dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 
-  sled: 00320471-945d-413c-85e7-03e091a70b3c (active, config generation 1)
+  sled: 00320471-945d-413c-85e7-03e091a70b3c
+    state:::::::::::::   active
+    config generation:   1
+    subnet::::::::::::   fd00:1122:3344:104::/64
 
     host phase 2 contents:
     ------------------------
@@ -86,7 +89,10 @@ parent:    dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 
 
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 2)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -151,7 +157,10 @@ parent:    dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 2)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -213,7 +222,10 @@ parent:    dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 2)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-example-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-example-stdout
index a3028f9b689..847f19f00b7 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-example-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-example-stdout
@@ -82,7 +82,10 @@ zpools (10):
 blueprint  ade5749d-bdf3-4fab-a8ae-00bea01b3a5a
 parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
-  sled: 2eb69596-f081-4e2d-9425-9994926e0832 (active, config generation 2)
+  sled: 2eb69596-f081-4e2d-9425-9994926e0832
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -196,7 +199,10 @@ parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
 
 
-  sled: 32d8d836-4d8a-4e54-8fa9-f31d79c42646 (active, config generation 2)
+  sled: 32d8d836-4d8a-4e54-8fa9-f31d79c42646
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -307,7 +313,10 @@ parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
 
 
-  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b (active, config generation 2)
+  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -497,7 +506,10 @@ zpools (4):
 blueprint  ade5749d-bdf3-4fab-a8ae-00bea01b3a5a
 parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
-  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b (active, config generation 2)
+  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1151,7 +1163,10 @@ T ENA ID                                   PARENT
 blueprint  ade5749d-bdf3-4fab-a8ae-00bea01b3a5a
 parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
-  sled: 2eb69596-f081-4e2d-9425-9994926e0832 (active, config generation 2)
+  sled: 2eb69596-f081-4e2d-9425-9994926e0832
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1203,7 +1218,10 @@ parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
 
 
-  sled: 32d8d836-4d8a-4e54-8fa9-f31d79c42646 (active, config generation 2)
+  sled: 32d8d836-4d8a-4e54-8fa9-f31d79c42646
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -1255,7 +1273,10 @@ parent:    02697f74-b14a-4418-90f0-c28b2a3a6aa9
 
 
 
-  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b (active, config generation 2)
+  sled: 89d02b1b-478c-401a-8e28-7a26f74fa41b
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-external-dns-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-external-dns-stdout
index 5b6455a499e..567030c7ba4 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-external-dns-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-external-dns-stdout
@@ -11,7 +11,10 @@ loaded example system with:
 blueprint  3f00b694-1b16-4aaa-8f78-e6b3a527b434
 parent:    06c88262-f435-410e-ba98-101bed41ec27
 
-  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a (active, config generation 2)
+  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -125,7 +128,10 @@ parent:    06c88262-f435-410e-ba98-101bed41ec27
 
 
 
-  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c (active, config generation 2)
+  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -236,7 +242,10 @@ parent:    06c88262-f435-410e-ba98-101bed41ec27
 
 
 
-  sled: a88790de-5962-4871-8686-61c1fd5b7094 (active, config generation 2)
+  sled: a88790de-5962-4871-8686-61c1fd5b7094
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -549,7 +558,10 @@ external DNS:
 blueprint  366b0b68-d80e-4bc1-abd3-dc69837847e0
 parent:    3f00b694-1b16-4aaa-8f78-e6b3a527b434
 
-  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a (active, config generation 3)
+  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -663,7 +675,10 @@ parent:    3f00b694-1b16-4aaa-8f78-e6b3a527b434
 
 
 
-  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c (active, config generation 2)
+  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -774,7 +789,10 @@ parent:    3f00b694-1b16-4aaa-8f78-e6b3a527b434
 
 
 
-  sled: a88790de-5962-4871-8686-61c1fd5b7094 (active, config generation 2)
+  sled: a88790de-5962-4871-8686-61c1fd5b7094
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1112,7 +1130,10 @@ external DNS:
 blueprint  9c998c1d-1a7b-440a-ae0c-40f781dea6e2
 parent:    366b0b68-d80e-4bc1-abd3-dc69837847e0
 
-  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a (active, config generation 4)
+  sled: 711ac7f8-d19e-4572-bdb9-e9b50f6e362a
+    state:::::::::::::   active
+    config generation:   4
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -1229,7 +1250,10 @@ parent:    366b0b68-d80e-4bc1-abd3-dc69837847e0
 
 
 
-  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c (active, config generation 2)
+  sled: 9dc50690-f9bf-4520-bf80-051d0f465c2c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1340,7 +1364,10 @@ parent:    366b0b68-d80e-4bc1-abd3-dc69837847e0
 
 
 
-  sled: a88790de-5962-4871-8686-61c1fd5b7094 (active, config generation 2)
+  sled: a88790de-5962-4871-8686-61c1fd5b7094
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-internal-dns-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-internal-dns-stdout
index 52f5192d2cf..8d8f96928c4 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-internal-dns-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-newly-added-internal-dns-stdout
@@ -9,7 +9,10 @@ loaded example system with:
 blueprint  dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 2)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -123,7 +126,10 @@ parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 2)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -234,7 +240,10 @@ parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 2)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-zones-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-zones-stdout
index 1ad4c319a79..213417a4d10 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-zones-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-expunge-zones-stdout
@@ -14,7 +14,10 @@ T ENA ID                                   PARENT
 blueprint  dbcbd3d6-41ff-48ae-ac0b-1becc9b2fd21
 parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 2)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -79,7 +82,10 @@ parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 2)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -141,7 +147,10 @@ parent:    184f10b3-61cb-41ef-9b93-3489b2bac559
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 2)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-host-phase-2-source-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-host-phase-2-source-stdout
index 612002675cb..45933052308 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-host-phase-2-source-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-host-phase-2-source-stdout
@@ -353,7 +353,10 @@ external DNS:
 blueprint  58d5e830-0884-47d8-a7cd-b2b3751adeb4
 parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 4)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   4
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------------
@@ -856,7 +859,10 @@ external DNS:
 blueprint  df06bb57-ad42-4431-9206-abff322896c7
 parent:    af934083-59b5-4bf6-8966-6fb5292c29e1
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 6)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   6
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-mupdate-update-flow-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-mupdate-update-flow-stdout
index 1033d599d0c..7c8f6ddf074 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-mupdate-update-flow-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-mupdate-update-flow-stdout
@@ -1218,7 +1218,10 @@ planning report:
 blueprint  afb09faf-a586-4483-9289-04d4f1d8ba23
 parent:    c1a0d242-9160-40f4-96ae-61f8f40a0b1b
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 5)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   5
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1269,7 +1272,10 @@ parent:    c1a0d242-9160-40f4-96ae-61f8f40a0b1b
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 7)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   7
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1317,7 +1323,10 @@ parent:    c1a0d242-9160-40f4-96ae-61f8f40a0b1b
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 5)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   5
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -1548,7 +1557,10 @@ planning report:
 blueprint  ce365dff-2cdb-4f35-a186-b15e20e1e700
 parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 5)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   5
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1599,7 +1611,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 7)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   7
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1647,7 +1662,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 6)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   6
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -1914,7 +1932,10 @@ planning report:
 blueprint  12d602a6-5ab4-487a-b94e-eb30cdf30300
 parent:    8f2d1f39-7c88-4701-aa43-56bf281b28c1
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 6)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   6
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1965,7 +1986,10 @@ parent:    8f2d1f39-7c88-4701-aa43-56bf281b28c1
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 7)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   7
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -2013,7 +2037,10 @@ parent:    8f2d1f39-7c88-4701-aa43-56bf281b28c1
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 6)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   6
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-nexus-generation-autobump-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-nexus-generation-autobump-stdout
index 0b75dfb0291..8cdec0d67bf 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-nexus-generation-autobump-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-nexus-generation-autobump-stdout
@@ -1072,7 +1072,10 @@ empty planning report
 blueprint  58d5e830-0884-47d8-a7cd-b2b3751adeb4
 parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 3)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------------
@@ -1137,7 +1140,10 @@ parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 3)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------------
@@ -1199,7 +1205,10 @@ parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 3)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-set-mgs-updates-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-set-mgs-updates-stdout
index 0f500bfd07d..dce677037c7 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-set-mgs-updates-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-set-mgs-updates-stdout
@@ -11,7 +11,10 @@ loaded example system with:
 blueprint  ad97e762-7bf1-45a6-a98f-60afb7e491c0
 parent:    6ccc786b-17f1-4562-958f-5a7d9a5a15fd
 
-  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236 (active, config generation 2)
+  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -76,7 +79,10 @@ parent:    6ccc786b-17f1-4562-958f-5a7d9a5a15fd
 
 
 
-  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407 (active, config generation 2)
+  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -138,7 +144,10 @@ parent:    6ccc786b-17f1-4562-958f-5a7d9a5a15fd
 
 
 
-  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df (active, config generation 2)
+  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -232,7 +241,10 @@ warn: no validation is done on the requested artifact hash or version
 blueprint  cca24b71-09b5-4042-9185-b33e9f2ebba0
 parent:    ad97e762-7bf1-45a6-a98f-60afb7e491c0
 
-  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236 (active, config generation 2)
+  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -297,7 +309,10 @@ parent:    ad97e762-7bf1-45a6-a98f-60afb7e491c0
 
 
 
-  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407 (active, config generation 2)
+  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -359,7 +374,10 @@ parent:    ad97e762-7bf1-45a6-a98f-60afb7e491c0
 
 
 
-  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df (active, config generation 2)
+  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -535,7 +553,10 @@ warn: no validation is done on the requested artifact hash or version
 blueprint  5bf974f3-81f9-455b-b24e-3099f765664c
 parent:    cca24b71-09b5-4042-9185-b33e9f2ebba0
 
-  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236 (active, config generation 2)
+  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -600,7 +621,10 @@ parent:    cca24b71-09b5-4042-9185-b33e9f2ebba0
 
 
 
-  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407 (active, config generation 2)
+  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -662,7 +686,10 @@ parent:    cca24b71-09b5-4042-9185-b33e9f2ebba0
 
 
 
-  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df (active, config generation 2)
+  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -841,7 +868,10 @@ warn: no validation is done on the requested artifact hash or version
 blueprint  1b837a27-3be1-4fcb-8499-a921c839e1d0
 parent:    5bf974f3-81f9-455b-b24e-3099f765664c
 
-  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236 (active, config generation 2)
+  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -906,7 +936,10 @@ parent:    5bf974f3-81f9-455b-b24e-3099f765664c
 
 
 
-  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407 (active, config generation 2)
+  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -968,7 +1001,10 @@ parent:    5bf974f3-81f9-455b-b24e-3099f765664c
 
 
 
-  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df (active, config generation 2)
+  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -1106,7 +1142,10 @@ blueprint 3682a71b-c6ca-4b7e-8f84-16df80c85960 created from blueprint 1b837a27-3
 blueprint  3682a71b-c6ca-4b7e-8f84-16df80c85960
 parent:    1b837a27-3be1-4fcb-8499-a921c839e1d0
 
-  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236 (active, config generation 2)
+  sled: bb0ec23a-f97c-4b6a-a5bc-864b1ebc9236
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1171,7 +1210,10 @@ parent:    1b837a27-3be1-4fcb-8499-a921c839e1d0
 
 
 
-  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407 (active, config generation 2)
+  sled: bba6ea73-6c9c-4ab5-8bb4-1dd145071407
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1233,7 +1275,10 @@ parent:    1b837a27-3be1-4fcb-8499-a921c839e1d0
 
 
 
-  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df (active, config generation 2)
+  sled: cc00b21a-5685-480a-ab5e-d2e29cf369df
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-set-remove-mupdate-override-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-set-remove-mupdate-override-stdout
index 5f2ef7bbc74..38e000249d0 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-set-remove-mupdate-override-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-set-remove-mupdate-override-stdout
@@ -49,7 +49,10 @@ blueprint 7f976e0d-d2a5-4eeb-9e82-c82bc2824aba created from latest blueprint (df
 blueprint  7f976e0d-d2a5-4eeb-9e82-c82bc2824aba
 parent:    df06bb57-ad42-4431-9206-abff322896c7
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 2)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -100,7 +103,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 2)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -148,7 +154,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: 9a867dc9-d505-427f-9eff-cdb1d4d9bd73 (active, config generation 3)
+  sled: 9a867dc9-d505-427f-9eff-cdb1d4d9bd73
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:106::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -197,7 +206,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: aff6c093-197d-42c5-ad80-9f10ba051a34 (active, config generation 3)
+  sled: aff6c093-197d-42c5-ad80-9f10ba051a34
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:104::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -236,7 +248,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: b82ede02-399c-48c6-a1de-411df4fa49a7 (active, config generation 3)
+  sled: b82ede02-399c-48c6-a1de-411df4fa49a7
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:105::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -275,7 +290,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 3)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:103::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -314,7 +332,10 @@ parent:    df06bb57-ad42-4431-9206-abff322896c7
 
 
 
-  sled: e96e226f-4ed9-4c01-91b9-69a9cd076c9e (active, config generation 3)
+  sled: e96e226f-4ed9-4c01-91b9-69a9cd076c9e
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:107::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -695,7 +716,10 @@ blueprint ce365dff-2cdb-4f35-a186-b15e20e1e700 created from latest blueprint (af
 blueprint  ce365dff-2cdb-4f35-a186-b15e20e1e700
 parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
-  sled: 00320471-945d-413c-85e7-03e091a70b3c (active, config generation 2)
+  sled: 00320471-945d-413c-85e7-03e091a70b3c
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   2
+    subnet:::::::::::::::::::::::   fd00:1122:3344:108::/64
     will remove mupdate override:   ffffffff-ffff-ffff-ffff-ffffffffffff
 
     host phase 2 contents:
@@ -725,7 +749,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 3)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:102::/64
     will remove mupdate override:   ffffffff-ffff-ffff-ffff-ffffffffffff
 
     host phase 2 contents:
@@ -777,7 +804,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 2)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -825,7 +855,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: 9a867dc9-d505-427f-9eff-cdb1d4d9bd73 (active, config generation 4)
+  sled: 9a867dc9-d505-427f-9eff-cdb1d4d9bd73
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   4
+    subnet:::::::::::::::::::::::   fd00:1122:3344:106::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -874,7 +907,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: aff6c093-197d-42c5-ad80-9f10ba051a34 (active, config generation 3)
+  sled: aff6c093-197d-42c5-ad80-9f10ba051a34
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   3
+    subnet:::::::::::::::::::::::   fd00:1122:3344:104::/64
     will remove mupdate override:   00000000-0000-0000-0000-000000000000
 
     host phase 2 contents:
@@ -913,7 +949,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: b82ede02-399c-48c6-a1de-411df4fa49a7 (active, config generation 4)
+  sled: b82ede02-399c-48c6-a1de-411df4fa49a7
+    state::::::::::::::::::::::::   active
+    config generation::::::::::::   4
+    subnet:::::::::::::::::::::::   fd00:1122:3344:105::/64
     will remove mupdate override:   ffffffff-ffff-ffff-ffff-ffffffffffff
 
     host phase 2 contents:
@@ -952,7 +991,10 @@ parent:    afb09faf-a586-4483-9289-04d4f1d8ba23
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 4)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   4
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-set-zone-images-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-set-zone-images-stdout
index 388b338b306..86d9ef94924 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-set-zone-images-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-set-zone-images-stdout
@@ -11,7 +11,10 @@ loaded example system with:
 blueprint  971eeb12-1830-4fa0-a699-98ea0164505c
 parent:    1b013011-2062-4b48-b544-a32b23bce83a
 
-  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0 (active, config generation 2)
+  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -133,7 +136,10 @@ warn: no validation is done on the requested image source
 blueprint  f714e6ea-e85a-4d7d-93c2-a018744fe176
 parent:    9766ca20-38d4-4380-b005-e7c43c797e7c
 
-  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0 (active, config generation 4)
+  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0
+    state:::::::::::::   active
+    config generation:   4
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -371,7 +377,10 @@ warn: no validation is done on the requested image source
 blueprint  d9c572a1-a68c-4945-b1ec-5389bd588fe9
 parent:    bb128f06-a2e1-44c1-8874-4f789d0ff896
 
-  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0 (active, config generation 6)
+  sled: 868d5b02-7792-4fc0-b6a9-654afcae9ea0
+    state:::::::::::::   active
+    config generation:   6
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-target-release-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-target-release-stdout
index 801845e6a3b..66ce6ecbbeb 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-target-release-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-target-release-stdout
@@ -9050,7 +9050,10 @@ external DNS:
 blueprint  008e1541-3d9d-4a50-a877-eed4a3cf86ab
 parent:    05685571-d61f-4754-a2b2-604ea8c45dff
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 18)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   18
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------------
@@ -9127,7 +9130,10 @@ parent:    05685571-d61f-4754-a2b2-604ea8c45dff
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 19)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   19
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------------
@@ -9203,7 +9209,10 @@ parent:    05685571-d61f-4754-a2b2-604ea8c45dff
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 17)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   17
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------------
diff --git a/dev-tools/reconfigurator-cli/tests/output/cmds-unsafe-zone-mgs-stdout b/dev-tools/reconfigurator-cli/tests/output/cmds-unsafe-zone-mgs-stdout
index 7492024e0bc..691209d2742 100644
--- a/dev-tools/reconfigurator-cli/tests/output/cmds-unsafe-zone-mgs-stdout
+++ b/dev-tools/reconfigurator-cli/tests/output/cmds-unsafe-zone-mgs-stdout
@@ -1079,7 +1079,10 @@ d81c6a84-79b8-4958-ae41-ea46c9b19763 serial2 3       fd00:1122:3344:103::/64
 blueprint  58d5e830-0884-47d8-a7cd-b2b3751adeb4
 parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
-  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c (active, config generation 3)
+  sled: 2b8f0cb3-0295-4b3c-bc58-4fe88b57112c
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -1144,7 +1147,10 @@ parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
 
 
-  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6 (active, config generation 3)
+  sled: 98e6b7c2-2efa-41ca-b20a-0a4d61102fe6
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -1206,7 +1212,10 @@ parent:    8da82a8e-bf97-4fbd-8ddd-9f6462732cf1
 
 
 
-  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763 (active, config generation 3)
+  sled: d81c6a84-79b8-4958-ae41-ea46c9b19763
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/nexus/db-model/src/deployment.rs b/nexus/db-model/src/deployment.rs
index 37b1a1de795..02c6d3b5404 100644
--- a/nexus/db-model/src/deployment.rs
+++ b/nexus/db-model/src/deployment.rs
@@ -58,6 +58,8 @@ use nexus_types::deployment::{
     OmicronZoneExternalSnatIp,
 };
 use nexus_types::inventory::BaseboardId;
+use omicron_common::address::Ipv6Subnet;
+use omicron_common::address::SLED_PREFIX;
 use omicron_common::api::internal::shared::NetworkInterface;
 use omicron_common::disk::DiskIdentity;
 use omicron_common::zpool_name::ZpoolName;
@@ -217,9 +219,24 @@ pub struct BpSledMetadata {
     pub remove_mupdate_override: Option<DbTypedUuid<MupdateOverrideKind>>,
     pub host_phase_2_desired_slot_a: Option<ArtifactHash>,
     pub host_phase_2_desired_slot_b: Option<ArtifactHash>,
+    /// Public only for easy of writing queries; consumers should prefer the
+    /// `subnet()` method.
+    pub subnet: IpNetwork,
 }
 
 impl BpSledMetadata {
+    pub fn subnet(&self) -> anyhow::Result<Ipv6Subnet<SLED_PREFIX>> {
+        let subnet = match self.subnet {
+            IpNetwork::V4(subnet) => bail!(
+                "invalid subnet for sled {}: {subnet} (should be Ipv6)",
+                self.sled_id
+            ),
+            IpNetwork::V6(subnet) => subnet,
+        };
+
+        Ok(subnet.into())
+    }
+
     pub fn host_phase_2(
         &self,
         slot_a_artifact_version: Option<DbArtifactVersion>,
diff --git a/nexus/db-model/src/schema_versions.rs b/nexus/db-model/src/schema_versions.rs
index 1ee9a2a936a..691c8a5ecd6 100644
--- a/nexus/db-model/src/schema_versions.rs
+++ b/nexus/db-model/src/schema_versions.rs
@@ -16,7 +16,7 @@ use std::{collections::BTreeMap, sync::LazyLock};
 ///
 /// This must be updated when you change the database schema.  Refer to
 /// schema/crdb/README.adoc in the root of this repository for details.
-pub const SCHEMA_VERSION: Version = Version::new(209, 0, 0);
+pub const SCHEMA_VERSION: Version = Version::new(210, 0, 0);
 
 /// List of all past database schema versions, in *reverse* order
 ///
@@ -28,6 +28,7 @@ static KNOWN_VERSIONS: LazyLock<Vec<KnownVersion>> = LazyLock::new(|| {
         // |  leaving the first copy as an example for the next person.
         // v
         // KnownVersion::new(next_int, "unique-dirname-with-the-sql-files"),
+        KnownVersion::new(210, "blueprint-sled-config-subnet"),
         KnownVersion::new(209, "multicast-group-support"),
         KnownVersion::new(208, "disable-tuf-repo-pruner"),
         KnownVersion::new(207, "disk-types"),
diff --git a/nexus/db-queries/src/db/datastore/deployment.rs b/nexus/db-queries/src/db/datastore/deployment.rs
index ffb44a69c7a..3b5f406cd86 100644
--- a/nexus/db-queries/src/db/datastore/deployment.rs
+++ b/nexus/db-queries/src/db/datastore/deployment.rs
@@ -41,6 +41,7 @@ use diesel::sql_types;
 use diesel::sql_types::Nullable;
 use futures::FutureExt;
 use iddqd::IdOrdMap;
+use ipnetwork::Ipv6Network;
 use nexus_db_errors::ErrorHandler;
 use nexus_db_errors::OptionalError;
 use nexus_db_errors::TransactionError;
@@ -262,6 +263,7 @@ impl DataStore {
                     .slot_b
                     .artifact_hash()
                     .map(ArtifactHash),
+                subnet: Ipv6Network::from(sled.subnet).into(),
             })
             .collect::<Vec<_>>();
 
@@ -793,8 +795,14 @@ impl DataStore {
                 paginator = p.found_batch(&batch, &|(s, _, _)| s.sled_id);
 
                 for (s, slot_a_version, slot_b_version) in batch {
+                    let subnet = s.subnet().map_err(|e| {
+                        Error::internal_error(
+                            &InlineErrorChain::new(&*e).to_string(),
+                        )
+                    })?;
                     let config = BlueprintSledConfig {
                         state: s.sled_state.into(),
+                        subnet,
                         sled_agent_generation: *s.sled_agent_generation,
                         disks: IdOrdMap::new(),
                         datasets: IdOrdMap::new(),
diff --git a/nexus/db-schema/src/schema.rs b/nexus/db-schema/src/schema.rs
index 3f8576b0d14..29cca5f5daa 100644
--- a/nexus/db-schema/src/schema.rs
+++ b/nexus/db-schema/src/schema.rs
@@ -2044,6 +2044,8 @@ table! {
 
         host_phase_2_desired_slot_a -> Nullable<Text>,
         host_phase_2_desired_slot_b -> Nullable<Text>,
+
+        subnet -> Inet,
     }
 }
 
diff --git a/nexus/reconfigurator/execution/src/database.rs b/nexus/reconfigurator/execution/src/database.rs
index 075ecb7af33..5a3b691de81 100644
--- a/nexus/reconfigurator/execution/src/database.rs
+++ b/nexus/reconfigurator/execution/src/database.rs
@@ -79,12 +79,14 @@ mod test {
     use nexus_types::deployment::BlueprintZoneImageSource;
     use nexus_types::deployment::BlueprintZoneType;
     use nexus_types::deployment::CockroachDbPreserveDowngrade;
+    use nexus_types::deployment::OmicronZoneExternalFloatingIp;
     use nexus_types::deployment::OximeterReadMode;
     use nexus_types::deployment::PendingMgsUpdates;
     use nexus_types::deployment::blueprint_zone_type;
     use nexus_types::external_api::views::SledState;
     use nexus_types::inventory::NetworkInterface;
     use nexus_types::inventory::NetworkInterfaceKind;
+    use omicron_common::address::Ipv6Subnet;
     use omicron_common::api::external::Error;
     use omicron_common::api::external::Generation;
     use omicron_common::api::external::MacAddr;
@@ -98,6 +100,8 @@ mod test {
     use omicron_uuid_kinds::SledUuid;
     use omicron_uuid_kinds::ZpoolUuid;
     use std::collections::BTreeMap;
+    use std::net::IpAddr;
+    use std::net::Ipv6Addr;
 
     fn create_test_blueprint(
         top_level_nexus_generation: Generation,
@@ -112,38 +116,45 @@ mod test {
 
         let zones: IdOrdMap<BlueprintZoneConfig> = nexus_zones
             .into_iter()
-            .map(|(zone_id, disposition, nexus_generation)| BlueprintZoneConfig {
-                disposition,
-                id: zone_id,
-                filesystem_pool: ZpoolName::new_external(ZpoolUuid::new_v4()),
-                zone_type: BlueprintZoneType::Nexus(blueprint_zone_type::Nexus {
-                    internal_address: "[::1]:0".parse().unwrap(),
-                    lockstep_port: 0,
-                    external_dns_servers: Vec::new(),
-                    external_ip: nexus_types::deployment::OmicronZoneExternalFloatingIp {
-                        id: ExternalIpUuid::new_v4(),
-                        ip: std::net::IpAddr::V6(std::net::Ipv6Addr::LOCALHOST),
-                    },
-                    external_tls: true,
-                    nic: NetworkInterface {
-                        id: uuid::Uuid::new_v4(),
-                        kind: NetworkInterfaceKind::Service {
-                            id: zone_id.into_untyped_uuid(),
+            .map(|(zone_id, disposition, nexus_generation)| {
+                BlueprintZoneConfig {
+                    disposition,
+                    id: zone_id,
+                    filesystem_pool: ZpoolName::new_external(
+                        ZpoolUuid::new_v4(),
+                    ),
+                    zone_type: BlueprintZoneType::Nexus(
+                        blueprint_zone_type::Nexus {
+                            internal_address: "[::1]:0".parse().unwrap(),
+                            lockstep_port: 0,
+                            external_dns_servers: Vec::new(),
+                            external_ip: OmicronZoneExternalFloatingIp {
+                                id: ExternalIpUuid::new_v4(),
+                                ip: IpAddr::V6(Ipv6Addr::LOCALHOST),
+                            },
+                            external_tls: true,
+                            nic: NetworkInterface {
+                                id: uuid::Uuid::new_v4(),
+                                kind: NetworkInterfaceKind::Service {
+                                    id: zone_id.into_untyped_uuid(),
+                                },
+                                name: "test-nic".parse().unwrap(),
+                                ip: "192.168.1.1".parse().unwrap(),
+                                mac: MacAddr::random_system(),
+                                subnet: ipnetwork::IpNetwork::V4(
+                                    "192.168.1.0/24".parse().unwrap(),
+                                )
+                                .into(),
+                                vni: Vni::try_from(100).unwrap(),
+                                primary: true,
+                                slot: 0,
+                                transit_ips: Vec::new(),
+                            },
+                            nexus_generation,
                         },
-                        name: "test-nic".parse().unwrap(),
-                        ip: "192.168.1.1".parse().unwrap(),
-                        mac: MacAddr::random_system(),
-                        subnet: ipnetwork::IpNetwork::V4(
-                            "192.168.1.0/24".parse().unwrap()
-                        ).into(),
-                        vni: Vni::try_from(100).unwrap(),
-                        primary: true,
-                        slot: 0,
-                        transit_ips: Vec::new(),
-                    },
-                    nexus_generation,
-                }),
-                image_source: BlueprintZoneImageSource::InstallDataset,
+                    ),
+                    image_source: BlueprintZoneImageSource::InstallDataset,
+                }
             })
             .collect();
 
@@ -152,6 +163,7 @@ mod test {
             sled_id,
             BlueprintSledConfig {
                 state: SledState::Active,
+                subnet: Ipv6Subnet::new(Ipv6Addr::LOCALHOST),
                 sled_agent_generation: Generation::new(),
                 zones,
                 disks: IdOrdMap::new(),
diff --git a/nexus/reconfigurator/execution/src/dns.rs b/nexus/reconfigurator/execution/src/dns.rs
index fb932f75792..45813489d7f 100644
--- a/nexus/reconfigurator/execution/src/dns.rs
+++ b/nexus/reconfigurator/execution/src/dns.rs
@@ -706,6 +706,7 @@ mod test {
                 sa.sled_id,
                 BlueprintSledConfig {
                     state: SledState::Active,
+                    subnet: Ipv6Subnet::new(*sa.sled_agent_address.ip()),
                     sled_agent_generation: ledgered_sled_config.generation,
                     disks: IdOrdMap::new(),
                     datasets: IdOrdMap::new(),
diff --git a/nexus/reconfigurator/execution/src/omicron_sled_config.rs b/nexus/reconfigurator/execution/src/omicron_sled_config.rs
index 1d09b8708af..5a3758976d9 100644
--- a/nexus/reconfigurator/execution/src/omicron_sled_config.rs
+++ b/nexus/reconfigurator/execution/src/omicron_sled_config.rs
@@ -97,6 +97,7 @@ mod tests {
     use nexus_types::external_api::views::SledPolicy;
     use nexus_types::external_api::views::SledProvisionPolicy;
     use nexus_types::external_api::views::SledState;
+    use omicron_common::address::Ipv6Subnet;
     use omicron_common::address::REPO_DEPOT_PORT;
     use omicron_common::api::external::Generation;
     use omicron_common::api::internal::shared::DatasetKind;
@@ -109,6 +110,7 @@ mod tests {
     use omicron_uuid_kinds::OmicronZoneUuid;
     use omicron_uuid_kinds::PhysicalDiskUuid;
     use omicron_uuid_kinds::ZpoolUuid;
+    use std::net::Ipv6Addr;
     use std::net::SocketAddr;
 
     type ControlPlaneTestContext =
@@ -259,6 +261,7 @@ mod tests {
 
         let sled_config = BlueprintSledConfig {
             state: SledState::Active,
+            subnet: Ipv6Subnet::new(Ipv6Addr::LOCALHOST),
             sled_agent_generation: sim_sled_agent_config_generation.next(),
             disks,
             datasets,
diff --git a/nexus/reconfigurator/planning/src/blueprint_builder/builder.rs b/nexus/reconfigurator/planning/src/blueprint_builder/builder.rs
index ca9c8c67480..35023d421fb 100644
--- a/nexus/reconfigurator/planning/src/blueprint_builder/builder.rs
+++ b/nexus/reconfigurator/planning/src/blueprint_builder/builder.rs
@@ -580,31 +580,10 @@ impl<'a> BlueprintBuilder<'a> {
         // Convert our parent blueprint's sled configs into `SledEditor`s.
         let mut sled_editors = BTreeMap::new();
         for (sled_id, sled_cfg) in &parent_blueprint.sleds {
-            let state = sled_cfg.state;
-
-            let editor = match state {
-                SledState::Active => {
-                    let details = input
-                        .sled_lookup(SledFilter::Commissioned, *sled_id)
-                        .with_context(|| {
-                            format!(
-                                "failed to find sled details for \
-                                 active sled in parent blueprint {sled_id}"
-                            )
-                        })?;
-                    SledEditor::for_existing_active(
-                        details.resources.subnet,
-                        sled_cfg.clone(),
-                    )
-                }
-                SledState::Decommissioned => {
-                    SledEditor::for_existing_decommissioned(sled_cfg.clone())
-                }
-            }
-            .with_context(|| {
-                format!("failed to construct SledEditor for sled {sled_id}")
-            })?;
-
+            let editor = SledEditor::for_existing(sled_cfg.clone())
+                .with_context(|| {
+                    format!("failed to construct SledEditor for sled {sled_id}")
+                })?;
             sled_editors.insert(*sled_id, editor);
         }
 
diff --git a/nexus/reconfigurator/planning/src/blueprint_editor/sled_editor.rs b/nexus/reconfigurator/planning/src/blueprint_editor/sled_editor.rs
index a88f59b6315..e0a75b1b367 100644
--- a/nexus/reconfigurator/planning/src/blueprint_editor/sled_editor.rs
+++ b/nexus/reconfigurator/planning/src/blueprint_editor/sled_editor.rs
@@ -159,33 +159,18 @@ enum InnerSledEditor {
 }
 
 impl SledEditor {
-    pub fn for_existing_active(
-        subnet: Ipv6Subnet<SLED_PREFIX>,
+    pub fn for_existing(
         config: BlueprintSledConfig,
     ) -> Result<Self, SledInputError> {
-        assert_eq!(
-            config.state,
-            SledState::Active,
-            "for_existing_active called on non-active sled"
-        );
-        let inner = ActiveSledEditor::new(subnet, config)?;
-        Ok(Self(InnerSledEditor::Active(inner)))
-    }
-
-    pub fn for_existing_decommissioned(
-        config: BlueprintSledConfig,
-    ) -> Result<Self, SledInputError> {
-        assert_eq!(
-            config.state,
-            SledState::Decommissioned,
-            "for_existing_decommissioned called on non-decommissioned sled"
-        );
-        let inner = EditedSled {
-            config,
-            edit_counts: SledEditCounts::zeroes(),
-            scalar_edits: EditedSledScalarEdits::zeroes(),
+        let inner = match config.state {
+            SledState::Active => {
+                InnerSledEditor::Active(ActiveSledEditor::new(config)?)
+            }
+            SledState::Decommissioned => {
+                InnerSledEditor::Decommissioned(EditedSled::new(config))
+            }
         };
-        Ok(Self(InnerSledEditor::Decommissioned(inner)))
+        Ok(Self(inner))
     }
 
     pub fn for_new_active(subnet: Ipv6Subnet<SLED_PREFIX>) -> Self {
@@ -504,11 +489,18 @@ pub(crate) struct EditedSled {
     pub scalar_edits: EditedSledScalarEdits,
 }
 
+impl EditedSled {
+    fn new(config: BlueprintSledConfig) -> Self {
+        Self {
+            config,
+            edit_counts: SledEditCounts::zeroes(),
+            scalar_edits: EditedSledScalarEdits::zeroes(),
+        }
+    }
+}
+
 impl ActiveSledEditor {
-    pub fn new(
-        subnet: Ipv6Subnet<SLED_PREFIX>,
-        config: BlueprintSledConfig,
-    ) -> Result<Self, SledInputError> {
+    pub fn new(config: BlueprintSledConfig) -> Result<Self, SledInputError> {
         let zones =
             ZonesEditor::new(config.sled_agent_generation, config.zones);
 
@@ -521,7 +513,8 @@ impl ActiveSledEditor {
 
         Ok(Self {
             underlay_ip_allocator: SledUnderlayIpAllocator::new(
-                subnet, zone_ips,
+                config.subnet,
+                zone_ips,
             ),
             incoming_sled_agent_generation: config.sled_agent_generation,
             zones,
@@ -585,6 +578,7 @@ impl ActiveSledEditor {
         EditedSled {
             config: BlueprintSledConfig {
                 state: SledState::Active,
+                subnet: self.underlay_ip_allocator.subnet(),
                 sled_agent_generation,
                 disks,
                 datasets,
diff --git a/nexus/reconfigurator/planning/tests/output/example_builder_zone_counts_blueprint.txt b/nexus/reconfigurator/planning/tests/output/example_builder_zone_counts_blueprint.txt
index cd6ce50710c..585009ab08c 100644
--- a/nexus/reconfigurator/planning/tests/output/example_builder_zone_counts_blueprint.txt
+++ b/nexus/reconfigurator/planning/tests/output/example_builder_zone_counts_blueprint.txt
@@ -1,7 +1,10 @@
 blueprint  4a0b8410-b14f-41e7-85e7-3c0fe7050ccc
 parent:    e35b2fdd-354d-48d9-acb5-703b2c269a54
 
-  sled: 0dbf1e39-e265-4071-a8df-6d1225b46694 (active, config generation 2)
+  sled: 0dbf1e39-e265-4071-a8df-6d1225b46694
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:105::/64
 
     host phase 2 contents:
     ------------------------
@@ -120,7 +123,10 @@ parent:    e35b2fdd-354d-48d9-acb5-703b2c269a54
 
 
 
-  sled: 15cf73a6-445b-4d36-9232-5ed364019bc6 (active, config generation 2)
+  sled: 15cf73a6-445b-4d36-9232-5ed364019bc6
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:104::/64
 
     host phase 2 contents:
     ------------------------
@@ -234,7 +240,10 @@ parent:    e35b2fdd-354d-48d9-acb5-703b2c269a54
 
 
 
-  sled: 50e6c1c0-43b2-4abc-9041-41165597f639 (active, config generation 2)
+  sled: 50e6c1c0-43b2-4abc-9041-41165597f639
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -345,7 +354,10 @@ parent:    e35b2fdd-354d-48d9-acb5-703b2c269a54
 
 
 
-  sled: 969ff976-df34-402c-a362-53db03a6b97f (active, config generation 2)
+  sled: 969ff976-df34-402c-a362-53db03a6b97f
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -456,7 +468,10 @@ parent:    e35b2fdd-354d-48d9-acb5-703b2c269a54
 
 
 
-  sled: ec5c0b37-b651-4c45-ac1c-24541ef9c44b (active, config generation 2)
+  sled: ec5c0b37-b651-4c45-ac1c-24541ef9c44b
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/nexus/reconfigurator/planning/tests/output/planner_decommissions_sleds_bp2.txt b/nexus/reconfigurator/planning/tests/output/planner_decommissions_sleds_bp2.txt
index 09c4543f386..869c520946d 100644
--- a/nexus/reconfigurator/planning/tests/output/planner_decommissions_sleds_bp2.txt
+++ b/nexus/reconfigurator/planning/tests/output/planner_decommissions_sleds_bp2.txt
@@ -1,7 +1,10 @@
 blueprint  1ac2d88f-27dd-4506-8585-6b2be832528e
 parent:    516e80a3-b362-4fac-bd3c-4559717120dd
 
-  sled: a1b477db-b629-48eb-911d-1ccdafca75b9 (decommissioned, config generation 3)
+  sled: a1b477db-b629-48eb-911d-1ccdafca75b9
+    state:::::::::::::   decommissioned
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -112,7 +115,10 @@ parent:    516e80a3-b362-4fac-bd3c-4559717120dd
 
 
 
-  sled: d67ce8f0-a691-4010-b414-420d82e80527 (active, config generation 3)
+  sled: d67ce8f0-a691-4010-b414-420d82e80527
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
@@ -224,7 +230,10 @@ parent:    516e80a3-b362-4fac-bd3c-4559717120dd
 
 
 
-  sled: fefcf4cf-f7e7-46b3-b629-058526ce440e (active, config generation 3)
+  sled: fefcf4cf-f7e7-46b3-b629-058526ce440e
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/nexus/reconfigurator/planning/tests/output/planner_nonprovisionable_bp2.txt b/nexus/reconfigurator/planning/tests/output/planner_nonprovisionable_bp2.txt
index e4e0d1907ce..96db5496f0c 100644
--- a/nexus/reconfigurator/planning/tests/output/planner_nonprovisionable_bp2.txt
+++ b/nexus/reconfigurator/planning/tests/output/planner_nonprovisionable_bp2.txt
@@ -1,7 +1,10 @@
 blueprint  9f71f5d3-a272-4382-9154-6ea2e171a6c6
 parent:    4d4e6c38-cd95-4c4e-8f45-6af4d686964b
 
-  sled: 2d1cb4f2-cf44-40fc-b118-85036eb732a9 (active, config generation 2)
+  sled: 2d1cb4f2-cf44-40fc-b118-85036eb732a9
+    state:::::::::::::   active
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:105::/64
 
     host phase 2 contents:
     ------------------------
@@ -112,7 +115,10 @@ parent:    4d4e6c38-cd95-4c4e-8f45-6af4d686964b
 
 
 
-  sled: 48d95fef-bc9f-4f50-9a53-1e075836291d (decommissioned, config generation 3)
+  sled: 48d95fef-bc9f-4f50-9a53-1e075836291d
+    state:::::::::::::   decommissioned
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:103::/64
 
     host phase 2 contents:
     ------------------------
@@ -220,7 +226,10 @@ parent:    4d4e6c38-cd95-4c4e-8f45-6af4d686964b
 
 
 
-  sled: 68d24ac5-f341-49ea-a92a-0381b52ab387 (decommissioned, config generation 2)
+  sled: 68d24ac5-f341-49ea-a92a-0381b52ab387
+    state:::::::::::::   decommissioned
+    config generation:   2
+    subnet::::::::::::   fd00:1122:3344:102::/64
 
     host phase 2 contents:
     ------------------------
@@ -328,7 +337,10 @@ parent:    4d4e6c38-cd95-4c4e-8f45-6af4d686964b
 
 
 
-  sled: 75bc286f-2b4b-482c-9431-59272af529da (active, config generation 3)
+  sled: 75bc286f-2b4b-482c-9431-59272af529da
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:104::/64
 
     host phase 2 contents:
     ------------------------
@@ -437,7 +449,10 @@ parent:    4d4e6c38-cd95-4c4e-8f45-6af4d686964b
 
 
 
-  sled: affab35f-600a-4109-8ea0-34a067a4e0bc (active, config generation 3)
+  sled: affab35f-600a-4109-8ea0-34a067a4e0bc
+    state:::::::::::::   active
+    config generation:   3
+    subnet::::::::::::   fd00:1122:3344:101::/64
 
     host phase 2 contents:
     ------------------------
diff --git a/nexus/src/app/background/tasks/blueprint_execution.rs b/nexus/src/app/background/tasks/blueprint_execution.rs
index 53a86896c82..0e3d7b64dab 100644
--- a/nexus/src/app/background/tasks/blueprint_execution.rs
+++ b/nexus/src/app/background/tasks/blueprint_execution.rs
@@ -250,17 +250,18 @@ mod test {
         blueprint_zone_type,
     };
     use nexus_types::external_api::views::SledState;
+    use omicron_common::address::Ipv6Subnet;
     use omicron_common::api::external;
     use omicron_common::api::external::Generation;
     use omicron_common::zpool_name::ZpoolName;
     use omicron_uuid_kinds::BlueprintUuid;
-
     use omicron_uuid_kinds::OmicronZoneUuid;
     use omicron_uuid_kinds::PhysicalDiskUuid;
     use omicron_uuid_kinds::SledUuid;
     use omicron_uuid_kinds::ZpoolUuid;
     use serde_json::json;
     use std::collections::BTreeMap;
+    use std::net::Ipv6Addr;
     use std::net::SocketAddr;
     use std::sync::Arc;
     use tokio::sync::watch;
@@ -285,6 +286,7 @@ mod test {
                     sled_id,
                     BlueprintSledConfig {
                         state: SledState::Active,
+                        subnet: Ipv6Subnet::new(Ipv6Addr::LOCALHOST),
                         sled_agent_generation: Generation::new().next(),
                         disks: IdOrdMap::new(),
                         datasets: IdOrdMap::new(),
diff --git a/nexus/test-utils/src/lib.rs b/nexus/test-utils/src/lib.rs
index 2b801ba6694..da63e103731 100644
--- a/nexus/test-utils/src/lib.rs
+++ b/nexus/test-utils/src/lib.rs
@@ -66,6 +66,7 @@ use nexus_types::deployment::blueprint_zone_type;
 use nexus_types::external_api::views::SledState;
 use nexus_types::internal_api::params::DnsConfigParams;
 use omicron_common::address::DNS_OPTE_IPV4_SUBNET;
+use omicron_common::address::Ipv6Subnet;
 use omicron_common::address::NEXUS_OPTE_IPV4_SUBNET;
 use omicron_common::address::NTP_OPTE_IPV4_SUBNET;
 use omicron_common::address::NTP_PORT;
@@ -1708,6 +1709,7 @@ impl<'a, N: NexusServer> ControlPlaneTestContextBuilder<'a, N> {
                 sled_id,
                 BlueprintSledConfig {
                     state: SledState::Active,
+                    subnet: Ipv6Subnet::new(Ipv6Addr::LOCALHOST),
                     sled_agent_generation,
                     disks,
                     datasets,
diff --git a/nexus/tests/integration_tests/schema.rs b/nexus/tests/integration_tests/schema.rs
index 11cc874287a..9c00a3b8e32 100644
--- a/nexus/tests/integration_tests/schema.rs
+++ b/nexus/tests/integration_tests/schema.rs
@@ -3476,6 +3476,122 @@ fn after_207_0_0<'a>(ctx: &'a MigrationContext<'a>) -> BoxFuture<'a, ()> {
     })
 }
 
+mod migration_210 {
+    use super::*;
+    use omicron_common::address::Ipv6Subnet;
+    use omicron_common::address::SLED_PREFIX;
+    use pretty_assertions::assert_eq;
+    use std::collections::BTreeSet;
+
+    // randomly-generated IDs
+    const SLED_ID_1: &str = "48e1d10b-3ec8-4abd-95e2-5f37f79da546";
+    const SLED_ID_2: &str = "2144219e-d989-4929-b0b3-db895f51b7b5";
+    const SLED_ID_3: &str = "d2de378b-c788-4940-9a11-60ac4e633f0c";
+
+    // randomly-generated IPs
+    const SLED_IP_1: &str = "445c:212f:f2bc:f202:2b90:5b0e:2d6c:585e";
+    const SLED_IP_2: &str = "05fb:7e45:22b1:8dfb:9a06:0dbf:22ab:3eb4";
+    const SLED_IP_3: &str = "92a6:42c8:0cf2:7556:5ace:5bab:26e4:4dd1";
+
+    async fn before_impl(ctx: &MigrationContext<'_>) {
+        ctx.client
+            .batch_execute(&format!(
+                "
+        INSERT INTO omicron.public.sled (
+            id, time_created, time_modified, rcgen, rack_id, is_scrimlet,
+            serial_number, part_number, revision, usable_hardware_threads,
+            usable_physical_ram, reservoir_size, ip, port, last_used_address,
+            sled_policy, sled_state, repo_depot_port, cpu_family
+        )
+        VALUES
+        ('{SLED_ID_1}', now(), now(), 1, gen_random_uuid(), false,
+         'migration-210-serial1', 'part1', 1, 64, 12345678, 123456,
+         '{SLED_IP_1}', 12345, '{SLED_IP_1}', 'in_service', 'active',
+         12346, 'unknown'),
+        ('{SLED_ID_2}', now(), now(), 1, gen_random_uuid(), false,
+         'migration-210-serial2', 'part1', 1, 64, 12345678, 123456,
+         '{SLED_IP_2}', 12345, '{SLED_IP_2}', 'no_provision', 'active',
+         12346, 'unknown'),
+        ('{SLED_ID_3}', now(), now(), 1, gen_random_uuid(), false,
+         'migration-210-serial3', 'part1', 1, 64, 12345678, 123456,
+         '{SLED_IP_3}', 12345, '{SLED_IP_3}', 'expunged', 'decommissioned',
+         12346, 'unknown');
+
+        INSERT INTO omicron.public.bp_sled_metadata (
+            blueprint_id, sled_id, sled_state, sled_agent_generation,
+            remove_mupdate_override, host_phase_2_desired_slot_a,
+            host_phase_2_desired_slot_b
+        )
+        VALUES
+        (gen_random_uuid(), '{SLED_ID_1}', 'active', 1, NULL, NULL, NULL),
+        (gen_random_uuid(), '{SLED_ID_2}', 'active', 1, NULL, NULL, NULL),
+        (gen_random_uuid(), '{SLED_ID_3}', 'decommissioned', 1,
+         NULL, NULL, NULL);
+                "
+            ))
+            .await
+            .expect("inserted pre-migration data");
+    }
+
+    async fn after_impl(ctx: &MigrationContext<'_>) {
+        let sled_id_1: Uuid = SLED_ID_1.parse().unwrap();
+        let sled_id_2: Uuid = SLED_ID_2.parse().unwrap();
+        let sled_id_3: Uuid = SLED_ID_3.parse().unwrap();
+
+        let expected = [
+            (
+                sled_id_1,
+                Ipv6Subnet::<SLED_PREFIX>::new(SLED_IP_1.parse().unwrap())
+                    .to_string(),
+            ),
+            (
+                sled_id_2,
+                Ipv6Subnet::<SLED_PREFIX>::new(SLED_IP_2.parse().unwrap())
+                    .to_string(),
+            ),
+            (
+                sled_id_3,
+                Ipv6Subnet::<SLED_PREFIX>::new(SLED_IP_3.parse().unwrap())
+                    .to_string(),
+            ),
+        ]
+        .into_iter()
+        .collect::<BTreeSet<_>>();
+
+        let rows = ctx
+            .client
+            .query(
+                "
+                SELECT sled_id, subnet::text
+                FROM omicron.public.bp_sled_metadata
+                WHERE sled_id IN ($1, $2, $3)
+                ",
+                &[&sled_id_1, &sled_id_2, &sled_id_3],
+            )
+            .await
+            .expect("queried post-migration data");
+        let got = rows
+            .into_iter()
+            .map(|row| {
+                (row.get::<_, Uuid>("sled_id"), row.get::<_, String>("subnet"))
+            })
+            .collect::<BTreeSet<_>>();
+        assert_eq!(expected, got);
+    }
+
+    pub(super) fn before<'a>(
+        ctx: &'a MigrationContext<'a>,
+    ) -> BoxFuture<'a, ()> {
+        Box::pin(before_impl(ctx))
+    }
+
+    pub(super) fn after<'a>(
+        ctx: &'a MigrationContext<'a>,
+    ) -> BoxFuture<'a, ()> {
+        Box::pin(after_impl(ctx))
+    }
+}
+
 // Lazily initializes all migration checks. The combination of Rust function
 // pointers and async makes defining a static table fairly painful, so we're
 // using lazy initialization instead.
@@ -3586,6 +3702,12 @@ fn get_migration_checks() -> BTreeMap<Version, DataMigrationFns> {
         Version::new(207, 0, 0),
         DataMigrationFns::new().before(before_207_0_0).after(after_207_0_0),
     );
+    map.insert(
+        Version::new(210, 0, 0),
+        DataMigrationFns::new()
+            .before(migration_210::before)
+            .after(migration_210::after),
+    );
     map
 }
 
diff --git a/nexus/types/src/deployment.rs b/nexus/types/src/deployment.rs
index 01272eeb750..2cee0ca6e26 100644
--- a/nexus/types/src/deployment.rs
+++ b/nexus/types/src/deployment.rs
@@ -34,6 +34,8 @@ use nexus_sled_agent_shared::inventory::OmicronSledConfig;
 use nexus_sled_agent_shared::inventory::OmicronZoneConfig;
 use nexus_sled_agent_shared::inventory::OmicronZoneImageSource;
 use nexus_sled_agent_shared::inventory::ZoneKind;
+use omicron_common::address::Ipv6Subnet;
+use omicron_common::address::SLED_PREFIX;
 use omicron_common::api::external::ByteCount;
 use omicron_common::api::external::Generation;
 use omicron_common::api::external::TufArtifactMeta;
@@ -814,6 +816,7 @@ impl fmt::Display for BlueprintDisplay<'_> {
         for (sled_id, config) in sleds {
             let BlueprintSledConfig {
                 state,
+                subnet,
                 sled_agent_generation,
                 disks,
                 datasets,
@@ -822,14 +825,13 @@ impl fmt::Display for BlueprintDisplay<'_> {
                 host_phase_2,
             } = config;
 
-            // Report the sled state
-            writeln!(
-                f,
-                "\n  sled: {sled_id} ({state}, config generation \
-                 {sled_agent_generation})",
-            )?;
-
+            // Report toplevel sled info
+            writeln!(f, "\n  sled: {sled_id}")?;
             let mut rows = Vec::new();
+            rows.push((STATE, state.to_string()));
+            rows.push((CONFIG_GENERATION, sled_agent_generation.to_string()));
+            rows.push((SUBNET, subnet.to_string()));
+
             if let Some(id) = remove_mupdate_override {
                 rows.push((WILL_REMOVE_MUPDATE_OVERRIDE, id.to_string()));
             }
@@ -926,6 +928,7 @@ impl fmt::Display for BlueprintDisplay<'_> {
 )]
 pub struct BlueprintSledConfig {
     pub state: SledState,
+    pub subnet: Ipv6Subnet<SLED_PREFIX>,
 
     /// Generation number used when this type is converted into an
     /// `OmicronSledConfig` for use by sled-agent.
diff --git a/nexus/types/src/deployment/blueprint_display.rs b/nexus/types/src/deployment/blueprint_display.rs
index dec9ce3e699..bfa51da9fcb 100644
--- a/nexus/types/src/deployment/blueprint_display.rs
+++ b/nexus/types/src/deployment/blueprint_display.rs
@@ -53,6 +53,9 @@ pub mod constants {
         "(not present in collection)";
     pub const INVALID_VALUE_PARENS: &str = "(invalid value)";
     pub const GENERATION: &str = "generation";
+    pub const STATE: &str = "state";
+    pub const CONFIG_GENERATION: &str = "config generation";
+    pub const SUBNET: &str = "subnet";
 }
 use constants::*;
 use std::fmt::Display;
diff --git a/openapi/nexus-lockstep.json b/openapi/nexus-lockstep.json
index ce07eeaac5a..3ea4798c36d 100644
--- a/openapi/nexus-lockstep.json
+++ b/openapi/nexus-lockstep.json
@@ -2389,6 +2389,9 @@
           "state": {
             "$ref": "#/components/schemas/SledState"
           },
+          "subnet": {
+            "$ref": "#/components/schemas/Ipv6Subnet"
+          },
           "zones": {
             "title": "IdOrdMap",
             "x-rust-type": {
@@ -2414,6 +2417,7 @@
           "host_phase_2",
           "sled_agent_generation",
           "state",
+          "subnet",
           "zones"
         ]
       },
@@ -5338,6 +5342,18 @@
           "last"
         ]
       },
+      "Ipv6Subnet": {
+        "description": "Wraps an [`Ipv6Net`] with a compile-time prefix length.",
+        "type": "object",
+        "properties": {
+          "net": {
+            "$ref": "#/components/schemas/Ipv6Net"
+          }
+        },
+        "required": [
+          "net"
+        ]
+      },
       "KeeperId": {
         "description": "A unique ID for a ClickHouse Keeper",
         "type": "integer",
diff --git a/schema/crdb/blueprint-sled-config-subnet/up1.sql b/schema/crdb/blueprint-sled-config-subnet/up1.sql
new file mode 100644
index 00000000000..0d619ea8eea
--- /dev/null
+++ b/schema/crdb/blueprint-sled-config-subnet/up1.sql
@@ -0,0 +1,2 @@
+ALTER TABLE omicron.public.bp_sled_metadata
+    ADD COLUMN IF NOT EXISTS subnet INET;
diff --git a/schema/crdb/blueprint-sled-config-subnet/up2.sql b/schema/crdb/blueprint-sled-config-subnet/up2.sql
new file mode 100644
index 00000000000..3d33f7b2619
--- /dev/null
+++ b/schema/crdb/blueprint-sled-config-subnet/up2.sql
@@ -0,0 +1,8 @@
+SET LOCAL disallow_full_table_scans = off;
+
+UPDATE omicron.public.bp_sled_metadata as bp
+    SET subnet = (
+        SELECT set_masklen(netmask('::/64') & ip, 64)
+        FROM omicron.public.sled AS s
+        WHERE bp.sled_id = s.id
+    );
diff --git a/schema/crdb/blueprint-sled-config-subnet/up3.sql b/schema/crdb/blueprint-sled-config-subnet/up3.sql
new file mode 100644
index 00000000000..3747d8d38cf
--- /dev/null
+++ b/schema/crdb/blueprint-sled-config-subnet/up3.sql
@@ -0,0 +1,2 @@
+ALTER TABLE omicron.public.bp_sled_metadata
+    ALTER COLUMN subnet SET NOT NULL;
diff --git a/schema/crdb/dbinit.sql b/schema/crdb/dbinit.sql
index 9ce28021a5f..2dd10ed5973 100644
--- a/schema/crdb/dbinit.sql
+++ b/schema/crdb/dbinit.sql
@@ -4791,6 +4791,9 @@ CREATE TABLE IF NOT EXISTS omicron.public.bp_sled_metadata (
     host_phase_2_desired_slot_a STRING(64),
     host_phase_2_desired_slot_b STRING(64),
 
+    -- the sled's /64 subnet on the underlay address
+    subnet INET NOT NULL,
+
     PRIMARY KEY (blueprint_id, sled_id)
 );
 
@@ -7378,7 +7381,7 @@ INSERT INTO omicron.public.db_metadata (
     version,
     target_version
 ) VALUES
-    (TRUE, NOW(), NOW(), '209.0.0', NULL)
+    (TRUE, NOW(), NOW(), '210.0.0', NULL)
 ON CONFLICT DO NOTHING;
 
 COMMIT;
diff --git a/sled-agent/src/rack_setup/plan/service.rs b/sled-agent/src/rack_setup/plan/service.rs
index 34c43da981d..869c967ed18 100644
--- a/sled-agent/src/rack_setup/plan/service.rs
+++ b/sled-agent/src/rack_setup/plan/service.rs
@@ -171,6 +171,7 @@ impl SledConfig {
 pub(crate) struct PlannedSledDescription {
     pub(crate) underlay_address: SocketAddrV6,
     pub(crate) sled_id: SledUuid,
+    pub(crate) subnet: Ipv6Subnet<SLED_PREFIX>,
     pub(crate) config: SledConfig,
 }
 
@@ -812,6 +813,7 @@ impl Plan {
             .map(|sled_info| PlannedSledDescription {
                 underlay_address: sled_info.sled_address,
                 sled_id: sled_info.sled_id,
+                subnet: sled_info.subnet,
                 config: sled_info.request,
             })
             .collect();
@@ -910,6 +912,7 @@ impl Plan {
                 sled_description.sled_id,
                 BlueprintSledConfig {
                     state: SledState::Active,
+                    subnet: sled_description.subnet,
                     sled_agent_generation: sled_agent_config_generation,
                     disks: sled_config.disks.clone(),
                     datasets,
diff --git a/sled-agent/src/sim/server.rs b/sled-agent/src/sim/server.rs
index df511660761..a00f2f38202 100644
--- a/sled-agent/src/sim/server.rs
+++ b/sled-agent/src/sim/server.rs
@@ -40,8 +40,8 @@ use nexus_types::deployment::{
 };
 use nexus_types::inventory::NetworkInterfaceKind;
 use omicron_common::FileKv;
-use omicron_common::address::DNS_OPTE_IPV4_SUBNET;
 use omicron_common::address::NEXUS_OPTE_IPV4_SUBNET;
+use omicron_common::address::{DNS_OPTE_IPV4_SUBNET, Ipv6Subnet};
 use omicron_common::api::external::Generation;
 use omicron_common::api::external::MacAddr;
 use omicron_common::api::external::Vni;
@@ -590,6 +590,7 @@ pub async fn run_standalone_server(
         all_sleds.insert_overwrite(PlannedSledDescription {
             underlay_address,
             sled_id: config.id,
+            subnet: Ipv6Subnet::new(*underlay_address.ip()),
             config: SledConfig {
                 disks: omicron_physical_disks_config
                     .disks