ipsec6_common_input_cb
int ipsec6_common_input_cb(struct mbuf *, struct secasvar *, int, int,
error = ipsec6_common_input_cb(m, sav, skip, protoff,
error = ipsec6_common_input_cb(m, sav, skip, protoff,
error = ipsec6_common_input_cb(m, sav, skip, protoff,