tcpdump/bpf and seeing .1q tags
Charlie Schluting
charlie at schluting.com
Wed Mar 9 12:30:54 PST 2005
Charles Swiger wrote:
> On Mar 9, 2005, at 2:22 PM, Charlie Schluting wrote:
>> More importantly, I'm trying to figure out if a bpf read will see them
>> as well. Any insight on this?
>
>
> Yes, or it will if you use promisc mode and an appropriate BPF filter:
>
So promisc is enabled in my case.
This seems to imply that the bpf will always see the vlan tags. (I don't want
to.. that was the point of my question)
I believe this is starting to make sense. Thanks for your reply.
-Charlie
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