Hi list, so since the beginning of this week I've been poking at the last failure [1] in the nwfilter segment of the TCK suite. So, the errors come from libnl although I haven't been able to extract what the true underlying issue is since interface with ID '8' definitely exist on my system. A bit of background (you can either clone the repo or look at the Perl script attached), we're configuring the guest network interface as 'direct' with mode VEPA. IIUC, for proper VEPA support you need a compliant external switch which 1) I don't have 2) upstream CI planned to run in a nested env won't have either. The main issue lies in the test trying to set <virtualport> parameters on the interface. I've tried with regular network interfaces, vlan-tagged interfaces (as one of the other error messages complained about a missing vlan tag - which is something VEPA switches supposedly do on their own), and SR-IOV VFs with no luck. I'd be happy for any networking insights here, but given the setup which had clearly been tested with specialized HW I'd suggest simply disabling the test from the suite for upstream purposes - well, the correct approach would be to introduce a new config option indicating that specialized HW is necessary since currently the test case kind of abuses the config option assigning a virtual interface directly to the guest which in this case is a necessary condition, but not a sufficient one. However, with the Avocado<->TCK joined work happening, I'd rather not spent more time with Perl than necessary. [1] virNetDevVPortProfileOpSetLink:823 : error during virtual port configuration of ifindex 8: No such device or address virNetDevVPortProfileOpCommon:958 : internal error: sending of PortProfileRequest failed. Thanks, Erik