pcap filters on a VLAN

["Puneet Sood" <psood () nortelnetworks com>]

Hi,

Will a filter like the one below capture IP packets encapsulated in 
Ethernet frames and IP packets in Ethernet frame with a 802.1q VLAN header?

   ether proto 0x0800

If not, how does one specify capturing IP packets within an Ethernet 
frame with a 802.1q VLAN header?

What about filter that specify only UDP or TCP ports? Will those filters 
work for both Ethernet frames and 802.1q VLAN frames?

Thanks,
Puneet


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