ixv virtual function interfaces stopped working

[Hendre]

Hi everyone,

I'm having an issue with Intel X540 SR-IOV virtual functions ("ixv") on OPNsense 26.7 / FreeBSD 15.1 running under VMware ESXi 8.

The VF appears to receive and transmit traffic, according to ESXi statistics, but VLAN communication isn't working. I've also tested creating a VLAN interface ("ixv2.20") directly in OPNsense.

I suspect outgoing traffic isn't being VLAN-tagged correctly, although I haven't confirmed this with a packet capture. Switching back to VMXNET3 works.

Has anyone encountered this with "ixv" since the FreeBSD 15 upgrade? Could this be related to the recent Intel driver changes, or is there a known workaround?

Please help, my previous post didn't get any response.