Hi!

The patch attached simplifies the ifname2index list handling by using
linux list and it introduces minor cleanups such as remove iftb_log()
calls. This patch also fixes the leak in the nlif_close path (we forgot
to release the ifindex nodes from the hashes) that Anton has reported.

Slightly tested here. If you are OK with it I'll apply it asap.

-- 
"Los honestos son inadaptados sociales" -- Les Luthiers