tagged traffic according to the encapsulated protocol. It needs in
addition modifications to the filter generator which would deal with
checking the ethertype and vlan header as required.
The print_nfs.c changes are pretty extensive; this is partially because
LBL did a lot of cleanup and partially because I removed lots of
pointless changes away from the LBL style.
PR: 3371
mostly-Submitted by: Chris Timmons <skynyrd@opus.cts.cwu.edu>