return value from setsockopt() with one improvement: if the
user has used --ipv6 (-6) we don't discard the IPv6 socket.
This should help people using older Linux kernels that don't
implement IPv6 support quite right.
#ifdef IPV6_V6ONLY
if (resp->ai_family == AF_INET6) {
- setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
- (char *)&one, sizeof one);
+ if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
+ (char *)&one, sizeof one) < 0
+ && default_af_hint != AF_INET6) {
+ close(s);
+ continue;
+ }
}
#endif