diff --git a/design.md b/design.md
index 919a2bd3..67c44214 100644
--- a/design.md
+++ b/design.md
@@ -48,8 +48,9 @@ PUTs), or a JSON object with the same fields. The fields are:
 
 ```js
     {
-        "domain": string,
-        "routing_prefix": number
+        "fqdn": string,
+        "routing_prefix": number,
+        "local_ip": string
     }
 ```