diff --git a/scripts/start.sh b/scripts/start.sh
index 5fdd151..46028ca 100644
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -788,7 +788,7 @@ EOF
       "interface_name": "utun",
       "address": [
         $ipv6_address
-        "172.72.0.1/30"
+        "172.18.0.1/30"
       ],
       "auto_route": false,
       "stack": "system",