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nstun: set IPV6_V6ONLY on IPv6 so it doesn't collide with IPv4

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Robert Swiecki
2026-04-03 01:49:47 +02:00
parent 86530d8068
commit 3c92a17d2b
2 changed files with 4 additions and 1 deletions
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nstun/nstun.cc
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@@ -444,6 +444,7 @@ bool nstun_init_parent(int sock, nsj_t* nsj) {
if (nr.proto == NSTUN_PROTO_TCP)
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt));
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &opt, sizeof(opt));
struct sockaddr_in6 addr = INIT_SOCKADDR_IN6(AF_INET6);
addr.sin6_port = htons(port);