diff --git a/classes/cluster/mcp-offline/infra/aptly.yml b/classes/cluster/mcp-offline/infra/aptly.yml
index 3157881..144a588 100644
--- a/classes/cluster/mcp-offline/infra/aptly.yml
+++ b/classes/cluster/mcp-offline/infra/aptly.yml
@@ -107,15 +107,18 @@
       mirror_update:
         enabled: False
   docker:
+    host:
+      insecure_registries:
+        - apt:5000
+      options:
+        bip: 10.99.0.1/16
+        fixed-cidr: 10.99.0.1/17
     client:
       registry:
         target_registry: apt:5000
         image:
           - name: registry:2
             registry: ""
-    host:
-      insecure_registries:
-        - apt:5000
   git:
     server:
        directory: /srv/git/