Comment 6 for bug 658460

VLAN interfaces (e.g., eth0.2) work for me in 2.6.35-28-generic, but are broken past that. 2.6.37-* is broken as well as 2.6.38-* in (soon to be released) natty. Sporadic packet loss in reception of packets. Seems they get lost in the stack somewhere. Turning off generic-segmentation-offload and generic-receive-offload as suggested from a Google search help a little bit, but problems with packet loss still remain.

I'm surprised this isn't a big deal since I know a lot of folks run Ubuntu on their servers!