rn_newpair
t = rn_newpair(v_arg, b, nodes);
*rn_newpair(void *, uint_t, struct radix_node[2]),
t = rn_newpair(rn_zeros, off, rnh->rnh_nodes);
t = rn_newpair(rn_zeros, off, rnh->rnh_nodes);
t = rn_newpair(v_arg, b, nodes);
*rn_newpair(void *, int, struct radix_node[2]),
*rn_newpair __P((void *, int, struct radix_node[2])),