Post #1813507
2026-04-30 11:34 UTC
Well, that was annoying. I enabled SR-IOV in #XenServer and it stopped traffic to all VLANs on all interfaces. This is fair enough on the physical interface that SR-IOV is enabled on, but I wasn't expecting it to affect all NICs.
I wasted a lot of time hunting through switch and router configs to track this down.
Disabling SR-IOV isn't sufficient, each host needs to be rebooted afterwards. Let me see if I can recreate with @xcpng
Replies (1)
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@sborrill@justfollow.me.uk 2026-04-30 14:27
Yes, it's the same with @xcpng as #XenServer. XenCenter and XCP-ng Center don't offer the SR-IOV network as an option for VMs. Luckily, #XenOrchestra gets that right. While there I tested various #BSD OSes with SR-IOV and Intel i350 NICs: #NetBSD - NIC is described (as defined in pcidevs), but no driver #OpenBSD - NIC entirely unknown as not in pcidevs #FreeBSD - virtual function works straight off as igb0 The #NetBSD and slightly-newer #OpenBSD iavf(8) drivers only support much newer NICs.