I do see packets, but... I can run tcpdump in the broken mode wherne I can 
use the filter 'dst port 80 and not vlan' and it will give me every packet 
that has a vlan tag... (real nice, uhu? ). Comparing those packets with 
with the netsniff dump without any filter gives me no matching packets.


On Friday, February 21, 2014 1:23:48 AM UTC-8, Daniel Borkmann wrote:
>
> On 02/21/2014 01:15 AM, Tim Sailer wrote: 
> ... 
> >> What filter do you use? Have you tried the bpfc man page (man bpfc) 
> from a 
> >> recent netsniff-ng git tree? 
> > 
> > I tried with no filter (in theory, all packets, right?), then  'vlan and 
> > dst port 80' converted to bpf with tcpdump -dd. That gives absolutely no 
> > results. 'dst port 80' gives me all the untagged packets. 
>
> So, without any filter, you should actually get all packets ... vlan tags 
> might be stripped though due to hw offloading. Do you see packets w/o any 
> filtering? 
>

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