I submitted a PR a while ago (pr188261) - or now, Bugzilla
I've updated this recently - as I found doing 'ifconfig xn0 -txcsum' on a
"client" will fix the issue, for just that client - but I'm still unable to
fix the 'router' VM in such a way as all clients don't need a fix.
I have a test system setup with all this now (and all of 9.2-S, 10-S, and
11-Current have the issue) - is anyone able to point me in the right
direction of what I can do to investigate this further? (i.e. debug things,
packet captures, etc. etc.)
We could really do with getting this fixed - we use FreeBSD as routers on a
few systems - as as they move to Xen we end up having to either setup 2
pools (and be very, very careful about what machines we put on each) in
order to avoid this - or face running them in HVM mode for which the
performance is very, very poor.
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