rl_node_tostring
SERV_PARAMS(sep), rl_node_tostring(sep, node, buffer), node_size);
SERV_PARAMS(sep), rl_node_tostring(sep, node, buffer));
const char * name = rl_node_tostring(sep, node, buffer);
static const char *rl_node_tostring(struct servtab *, struct rl_ip_node *, char[NI_MAXHOST]);