rn_addroute
*rn_addroute(void *, void *, struct radix_node_head *,
rnh->rnh_addaddr = rn_addroute;
rnh->rnh_addaddr = rn_addroute;
*rn_addroute(void *, void *, struct radix_node_head *,
*rn_addroute __P((void *, void *, struct radix_node_head *,