Update internal

docker/networks/internal

@@ -1,12 +1,12 @@
     driver: macvlan
     driver_opts:
       parent: ${internal_interface}
-      com.docker.network.enable_ipv6: "${enable_ipv6:-false}"
+      com.docker.network.enable_ipv6: "${ipv6_enabled:-false}"
     ipam:
       config:
         - subnet: ${internal_subnet}
           gateway: ${internal_gateway}
-{{ if len "${internal_subnet6:-}" }}
+{{ if len "${internal_address6:-}" }}
         - subnet: ${internal_subnet6}
           gateway: ${internal_gateway6}
 {{ end }}