/* Make sure we only listen to IPv6 addresses */
setsockopt(server_fd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *) &v6only, sizeof(v6only));
/* Make sure we only listen to IPv6 addresses */
setsockopt(server_fd, IPPROTO_IPV6, IPV6_V6ONLY,
(char *) &v6only, sizeof(v6only));