Fix ipaddr usage in template

roles/internal/ffdo.unbound/templates/unbound-supernode.conf.j2

@@ -3,8 +3,8 @@ server:
   module-config: "iterator"
   interface: 0.0.0.0
   interface: ::0
-  access-control: {{mesh_ipv4|ipaddr('net')}} allow
-  access-control: {{mesh_ipv6|ipaddr('net')}} allow
+  access-control: {{mesh_ipv4|ipaddr('network')}} allow
+  access-control: {{mesh_ipv6|ipaddr('network')}} allow
   access-control: fe80::/10 allow
 
 local-zone: "services.ffdo.de." static