Another real failure from a live run: turnutils_uclient refuses to run at all without either -e <peer> or -y — a bare auth-only invocation isn't enough for it to actually attempt anything. Add -e 127.0.0.1 to both tools/pstn-test-check.sh's and tools/coturn-test-check.sh's invocations; loopback is always reachable since the test already runs via `docker exec` inside the coturn container itself, and it lets the test actually prove data relays through the allocation, not just that auth succeeded. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01H4k6J1qXXyYxhGEgnJaMvn