GET_PORT
GET_PORT(cur, servname); /*%< XXX: redundant lookups... */
GET_PORT(cur->ai_next, servname);
GET_PORT(cur->ai_next, servname);
GET_PORT(cur->ai_next, servname);
GET_PORT(cur->ai_next, servname);
port_num = GET_PORT(minor);
port_num = GET_PORT(minor);