I took a good VLAN packet and a bad non-VLAN packet and put then into
Wireshark. The IP header checksums are both correct.  Plus the rest of
the packet looks to be in acceptable form. Only the TCP checksums are
wrong.

Maybe when the VLAN hardware gets turned off there is a bug in the
code that is also turning off the TCP checksum hardware. So we are
just getting junk for that checksum which causes the packets to be
discarded.

-- 
Jon Smirl
jonsm...@gmail.com
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