rip6_input
return (rip6_input(mp, offp, proto));
[0 ... IPPROTO_MAX - 1] = rip6_input };
if (ip6_protox[proto] == rip6_input) {
if (ip6_protox[proto] != rip6_input) {
ip6_protox[proto] = rip6_input;
return (rip6_input(&m, &off, proto));
ip6proto_input_t rip6_input;