The proxy answers public and internal names on the same listeners, so serving an internal-only route made it reachable from the internet by anyone sending its name. Requests and handshakes for an internal name from outside the mesh range, loopback or a container bridge are now answered as an unrouted name, and the 404 no longer lists them (novox/hq issue 191, ADR 0138 insight of 2026-10-02).