On 02/21/2014 12:35 AM, Tim Sailer wrote:
Hi all,
I'm trying to move to the new Ubuntu LTS version that's going to be up in
April, but I have an issue. With the new 3.x kernels, libpcap support is
broken regarding sniffing vlans. It works perfectly in 2.4 and 2.6 kernels.
Since I saw that netsniff-ng didn't use libpcap, I figured it would work.
I'm sniffing traffic outside a firewall that is a mix of multiple vlans and
non-vlan-tagged traffic. So, I installed the package, fired it up and... no
vlan traffic. I'm sure I'm missing something, but I've googled my fingers
off today, and I'm not too proud to ask for help... So, HELP? Can someone
please show me what I'm missing? I've tried with no filters, with filters
with or without vlans, and I just get results on non vlan frames.
What filter do you use? Have you tried the bpfc man page (man bpfc) from a
recent netsniff-ng git tree?
Cheers,
Daniel
Tim
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