[updating Jesse's email address] On Wed, Jun 23, 2021 at 04:48:29PM +0200, Matthias May via dev wrote: > I'm currently fighting with issues where TCP/UDP frames that are larger than > the MTU of a GRE tunnel are dropped. > I'm aware of the whys and how to work around the issue, but while looking for > solutions i stumbled over the fact that: > * [1] added PMTUD support to OVS > * [2] disabled/removed with v1.9.0 respectively v1.10.0 the feature > > Even after some significant time looking through the history i haven't found > a reason why this was removed, just that it > was removed. > > I started some preliminary work to add PMTUD support to OVS (again), but the > fact that it was removed 8 years ago seems > to me like a red flag to not do it (again). > > Could someone fluent with the OVS history from 8 years ago shed some light on > why PMTUD support was dropped? > Any pointers to a thread on this topic?
It was a layering violation. This caused problems like, for example, not having a good IP address to send the "frag needed" message from. Jesse may remember more. _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
