Hello Can the linux kernel detect interface up line protocol down situations? Is there a object tracking feature in iproute ? ex: interface, route (next-hop down) etc... How about with sync serial cards running hdlc/ppp? This will have to be a part kernel feature and part device driver one I guess... (device data structure will have to provide flag.. i.e) -- Nonchalantly yours GobbledeGeek [Every thing but Gobbledegook.. !!]