From: Eric Lammerts <eric@lammerts.org>
Date: Wed, 5 Mar 2003 15:11:23 +0100
The reason is that (in af_packet.c) packet_notifier(NETDEV_DOWN) sets
sk->err to ENETDOWN, but packet_notifier(NETDEV_UP) doesn't clear it.
Is this behaviour deliberate?
Yes the behavior is deliberate. You want to be aware of the
event. Just because the opposite event has occurred afterwards
doesn't mean the first event didn't happen :-)
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