IP_FORWARDING
ip_output(m, NULL, &vifp->v_route, IP_FORWARDING, NULL, NULL);
error = ip_output(m, NULL, &ro, IP_FORWARDING, &imo, NULL);
ip_output(m, NULL, NULL, IP_FORWARDING, NULL, NULL);
return ip_output(m, NULL, NULL, IP_FORWARDING, NULL, NULL);
error = ip_output(m, NULL, &fwd_ro, IP_FORWARDING, NULL, NULL);
if (!(flags & (IP_FORWARDING|IP_RAWOUTPUT))) {
if (ip_mrouter && !(flags & IP_FORWARDING)) {
flags |= IP_FORWARDING;
if (!(flags & IP_FORWARDING) && ia) {