diff --git a/ops/nixos/lib/coredns/default.nix b/ops/nixos/lib/coredns/default.nix
index b5d4a454c0..446403b4b1 100644
--- a/ops/nixos/lib/coredns/default.nix
+++ b/ops/nixos/lib/coredns/default.nix
@@ -43,7 +43,7 @@
           log
           errors
           acl {
-            allow net 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 127.0.0.0/8
+            allow net 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 127.0.0.0/8 100.64.0.0/10
             allow net 92.118.28.0/22
             allow net 2a09:a440::/29 ::1/128
             block
diff --git a/ops/nixos/swann/default.nix b/ops/nixos/swann/default.nix
index 92fd4b3b8b..c8e48d7317 100644
--- a/ops/nixos/swann/default.nix
+++ b/ops/nixos/swann/default.nix
@@ -208,7 +208,7 @@ in {
       .:53 {
         bind 192.168.1.1 127.0.0.53
         acl {
-          allow net 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 127.0.0.0/8
+          allow net 192.168.0.0/16 172.16.0.0/12 10.0.0.0/8 127.0.0.0/8 100.64.0.0/10
           block
         }
         hosts /dev/null {