[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: NET5501 and tcpdump problem
In article <F11287F1-6E7B-4EC6-838C-EBF645FD5D8B%eis.cs.tu-bs.de@localhost>,
J. Hannken-Illjes <hannken%eis.cs.tu-bs.de@localhost> wrote:
>On Nov 27, 2012, at 9:00 AM, Jukka Marin <jmarin%embedtronics.fi@localhost>
>> When I start "tcpdump -i vr0" on NET5501 / NetBSD 6.0, all incoming traffic
>> stops for 30 seconds and when I kill tcpdump it happens again. Other
>> interfaces work normally during this time. I got this in kernel log:
>> vr0: using force reset command.
>> On other vr interfaces, there's a similar effect, but it lasts only a few
>> seconds instead of 30. Tcpdumping tun interfaces causes no problems.
>> A bug in the vr driver, perhaps?
>Most likely switching promiscuous mode on and off. Some controllers
>have to re-negotiate the link. Giving the `-p' flag to tcpdump disables
Yes, and most drivers can be fixed not to do that when the switch into
and out of promiscuous mode.
Main Index |
Thread Index |