rn_addroute
rn = rn_addroute(&ke->pfrke_sa, &mask, head, ke->pfrke_node);
rn = rn_addroute(&ke->pfrke_sa, NULL, head, ke->pfrke_node);
rnh->rnh_addaddr = rn_addroute;
struct radix_node *rn_addroute(const void *key, const void *mask,
ret = rn_addroute(key, mask, head, nodes);
ret = rn_addroute(key, mask, head, nodes);
ret = rn_addroute(key, mask, head, nodes);
ret = rn_addroute(key, mask, head, nodes);