On Mon, Jul 25, 2005 at 09:32:48PM -0400, Miles Nordin wrote:

> ALTQ is not compiled into this NetBSD 3.0 kernel.

Duh - I had suspected some interaction with ALTQ to be involved in this issue.

So your data show that incoming packets are still processed, but outgoing
ones just don't make it (not even to the bpf tap). I would suspect interface
output queue to be full - does netstat -s show output packets dropped due
to no bufs?

The down/up will clear the queue and reset the device. Something in the
device driver state must be wrong, or the output queue would drain.

Martin