#66794 replaced SOCKADDR_INET structure serialization by existing code in SocketAddress class, which uses platform-dependent values for the OS-level IPv6 address family enum. However, current version of MsQuic used by runtime uses Windows values on all platforms.

The IPv6 functionality on Linux will be fixed once we upgrade to MsQuic 2.0 (tracked by #64554), since that release uses the platform-specific enum values.

cc @ManickaP