IPPROTO_DCCP
if (sopt->sopt_level != IPPROTO_DCCP) {
ip6->ip6_nxt = IPPROTO_DCCP;
ip->ip_p = IPPROTO_DCCP;
dh->dh_sum = in6_cksum(m, IPPROTO_DCCP, sizeof(struct ip6_hdr),
dh->dh_sum = in4_cksum(m, IPPROTO_DCCP, sizeof(struct ip),
CTL_NET, PF_INET, IPPROTO_DCCP, CTL_EOL);
CTL_NET, PF_INET, IPPROTO_DCCP, DCCPCTL_LOGINVAIN,
CTL_NET, PF_INET, IPPROTO_DCCP, DCCPCTL_DOFEATURENEGO,
if (in6_cksum(m, IPPROTO_DCCP, off, cslen) != 0) {
dh->dh_sum = in4_cksum(m, IPPROTO_DCCP, off, cslen);
.pr_protocol = IPPROTO_DCCP,
.pr_protocol = IPPROTO_DCCP,
CASERETURN(IPPROTO_DCCP);