: The dev->buff list grows past the tx_queue_len when my gateway is offline.
: It grows even faster when arp is sending. If I arp -d the entry
: continously while pinging, the queue will suddenly become empty after
: a minute or so - sometimes. Just luck I guess, its quicker to down the
: interfaces and re-start them. This started somewhere in the late 1.3
: series.
It is interesting. If tx_queue is full, it means either
that you transmit something with full speed (it would be a software
bug), or that your networking card or even wire is dead.
Monitor /proc/net/dev statistics and try to tcpdump.
Alexey Kuznetsov.