IPV6_UNSPECSRC
return (ip6_output(m, NULL, NULL, IPV6_UNSPECSRC, NULL, NULL,
(flags & IPV6_UNSPECSRC) == 0) {
error = ip6_output(m0, &mld_po, NULL, IPV6_UNSPECSRC, &im6o,
ip6_output(m, NULL, NULL, (nonce != NULL) ? IPV6_UNSPECSRC : 0,