rn_addroute
static struct radix_node *rn_addroute(void *v_arg, void *n_arg,
rnh->rnh_addaddr = rn_addroute;
rnh->rnh_addaddr = rn_addroute;
struct radix_node *rn_addroute(void *, const void *, struct radix_head *,
rh->rnh_addaddr = rn_addroute;
rn = rn_addroute(&ke->pfrke_sa, &mask, head, ke->pfrke_node);
rn = rn_addroute(&ke->pfrke_sa, NULL, head, ke->pfrke_node);