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KKRainbow
ed8df2d58f
When a node has public IPv6 addresses allocated by EasyTier, those addresses are installed on the host's network interfaces. The system would then pick them up as candidate source/destination addresses for underlay connections (direct peer, UDP hole punch, bind addresses), causing overlay traffic to loop back into the overlay itself. Add a central predicate is_ip_easytier_managed_ipv6() and apply it at every point where IPv6 addresses are selected for underlay use: - Filter managed IPv6 from DNS-resolved connector addresses, including a UDP socket getsockname check to detect whether the OS would route through the overlay to reach a destination - Skip managed IPv6 in bind address selection and STUN candidate filtering - Strip managed IPv6 from GetIpListResponse RPC so peers never learn them - Pass pre-resolved addresses to tunnel connectors to avoid re-resolution Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>