On May 6, 2009, at 3:10 PM, Gerald Combs wrote:
Michael Tüxen wrote:
Dear all,
I'm implementing the support of simultaniously
capturing from multiple interfaces in dumpcap.
The first step, the support of writing in pcapng is done.
Now I need to be able to specify multiple interfaces
on the command line and also provide interface
specific options. I think something like
dumpcap -n -i lo0 -f udp -s 100 -y whatever -i en0 -s 0 -f sctp - y
whatever
should be possible. So I would like to require that you
need to specify the -i options before -f, -s, and -y.
The values specified by -f, -s, and -y only apply to
the interface specified before using the -i option.
It is also required to specify -n for using pcapng.
What do you think? Is this acceptable?
What happens if you specify a -f/-s/-y option only once with multiple
interfaces, e.g.
dumpcap -i en0 -f udp -i en1
Would "-f udp" apply to both interfaces or just en1?
According to my initial suggestion you would use defaults for en1,
which means no capture filter...
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