Patrick McHardy wrote:

So the average packet size is 56 bytes on eth1 and 42 bytes
on eth1.4001. So the difference is 14 bytes, which is expected
since the mac header is pulled off before delivery to the VLAN device.

yes makes sense... I am using 22 bytes for netperf payload which without VLAN produces 64=22+8+20+14 bytes frames (8 bytes for UDP header, 20 bytes for IP header, 14 bytes for Eth header). Now with vlans, how many bytes are on the wire, 78=64+14 ?


Or.