IPPORT_DHCPV6C
if (!bind_sock_v6(v6_sock_fd, IPPORT_DHCPV6C, NULL)) {
IPPORT_DHCPV6C);
compare_value(2, 2, IPPORT_DHCPV6C);
case IPPORT_DHCPV6C:
{ IPPORT_DHCPV6C, "DHCPv6C" },
client = htons(IPPORT_DHCPV6C);