A multi-homed machine (VM bridges, Ethernet + Wi-Fi) has several addresses and the server cannot know which network the phone is on — but the OS's default route is the right answer nearly always. The banner now prints one "on your phone" URL from the route probe, with the other interfaces on an if-that-doesn't-answer line; when the probe fails, the settings hint plus candidates. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g