On 6/5/26 4:54 PM, Paolo Abeni wrote: > On 6/5/26 4:02 PM, Fiona Ebner wrote: >> I wanted to ask if this configuration is expected to be unsupported and >> if the management is expected to turn off the feature on the commandline >> if the traffic might go over a physical NIC without the feature. Or if >> this could be a kernel or NIC bug that should be investigated further? >> In the former case, should the option really be turned on by default >> with new machine versions? > > Thank you for the detailed report. The configuration you describe is > supported and expected to work. The fact that different results are > obtained on top of a NIC with: > > [1] tx-udp_tnl-segmentation: off [fixed] > > WRT to similar setup on top of NIC with: > > [2] tx-udp_tnl-segmentation: off > > is indeed strange/unexpected, as the two scenarios are indistinguishable > from the stack perspective. I suspect the issue is NIC driver dependent. Skimming over the links you provided, it looks like multiple NICs are affected, so possibly/likely my above suspect is just wrong. Do you have handy a list of the NICs exposing the problem?
/P
