sys/dev/wg/if_wg.c
359
static bool wg_input(struct mbuf *, int, struct inpcb *, const struct sockaddr *, void *);
sys/dev/wg/if_wg.c
762
rc = udp_set_kernel_tunneling(so4, wg_input, NULL, sc);
sys/dev/wg/if_wg.c
774
rc = udp_set_kernel_tunneling(so6, wg_input, NULL, sc);