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The built-in pack server listened on every address, including a Mac's public IPv6 with its firewall off. The owner chose Mac-only for the map ports on 2026-11-10. pack.bind sets the address: empty (the default) listens everywhere as before, 127.0.0.1 keeps it local. Anything that isn't an IP address stops the pack server rather than widening. Players coming in through playit never reached 8164 anyway (the tunnel doesn't carry it), so binding it to loopback breaks nothing that works. Tested: 4 unit tests; the live suite now runs every group with pack.bind 127.0.0.1 and checks the port is refused on the machine's network address: 335/335 on Paper 26.1.2. Not run on 26.2 or 26.3. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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pack.bind: the address the built-in pack server listens on. Empty (the default) keeps today's behavior;127.0.0.1keeps it on the server's machine. A typo stops the pack server instead of widening it.Tested: 4 unit tests, and the live suite with
pack.bind: 127.0.0.1everywhere, 335/335 on Paper 26.1.2, including a check that the port is refused on the machine's network address.🤖 Generated with Claude Code