ranged_conflict
if (ranged_conflict(port, end, &rport, &rend))
if (ranged_conflict(port, end, tport, tend))
if (ranged_conflict(port, end, tport, tend))
if (ranged_conflict(addr, end, &raddr, &rend))
if (ranged_conflict(addr, end, taddr, tend))
if (ranged_conflict(addr, end, taddr, tend))
if (ranged_conflict(&start, &end, dev_start, dev_end))