PF_INET6
hints.ai_family = PF_INET6;
pf = PF_INET6;
int mib[4] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_DEFHLIM };
hints.ai_family = PF_INET6;
{PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),
{ PF_INET6, SOCK_DGRAM, IPPROTO_UDP, "udp", 0x07 },
{ PF_INET6, SOCK_STREAM, IPPROTO_TCP, "tcp", 0x07 },
{ PF_INET6, SOCK_RAW, ANY, NULL, 0x05 },
case PF_INET6:
#ifdef PF_INET6
|| MATCH_FAMILY(pai->ai_family, PF_INET6, 1)
#ifdef PF_INET6
pai->ai_family = PF_INET6;
CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_ADDRCTLPOLICY };
{PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),