diff --git a/ops/nixos/swann/default.nix b/ops/nixos/swann/default.nix
index 0b9ae8685e..8f6239f99b 100644
--- a/ops/nixos/swann/default.nix
+++ b/ops/nixos/swann/default.nix
@@ -1191,6 +1191,7 @@ in {
           hostname = "qvmpc6552";
         }];
         subnet4 = [{
+          id = 1;
           subnet = "192.168.1.0/24";
           pools = [{
             pool = "192.168.1.100 - 192.168.1.200";
@@ -1209,6 +1210,7 @@ in {
             data = "1420";
           }];
         } {
+          id = 2;
           subnet = "92.118.30.16/28";
           option-data = [{
             name = "routers";
@@ -1224,6 +1226,7 @@ in {
             data = "1420";
           }];
         } {
+          id = 10;
           subnet = "192.168.10.0/24";
           pools = [{
             pool = "192.168.10.100 - 192.168.10.200";
@@ -1253,6 +1256,7 @@ in {
           name = "/var/lib/kea/dhcp6.leases";
         };
         subnet6 = [{
+          id = 1;
           subnet = "2a09:a443:1::/48";
           pd-pools = [{
             prefix = "2a09:a443:1:8000::";
@@ -1267,6 +1271,7 @@ in {
             data = "house.as205479.net";
           }];
         } {
+          id = 3;
           subnet = "2a09:a443:3::/48";
           pd-pools = [{
             prefix = "2a09:a443:3:8000::";