Article 52ZS4 libvirt will not see all host interfaces while VBox can

libvirt will not see all host interfaces while VBox can

by
lpallard
from LinuxQuestions.org on (#52ZS4)
I have recently created a bridge and two VLAN's (slaves of that bridge) to be able to use in my VM's so they may get IP's under specific subnets from a pfsense FW. This works perfectly.

However I have a strange issue with libvirt where it will not "see" both of the VLAN's from the host. In the libvirt connection details > Network Interfaces, I see all host interfaces including my bridge and its two slave VLAN's. However in the VM settings, I see only the following:
  • Bridge br0: Host device enp2s0.200
  • No Virtual Network Available (Greyed out)
  • Host device enp2s0: macvtap
  • Specify shared device name
There should also be "Bridge br0: Host device enp2s0.300" which is the second host VLAN.

Virtualbox will see all interfaces.

I tried rebooting the host, restarting the network services and libvirt service, to no avail.

See attached screenshot of both VBox and libvirt.

See this thread (especially post #7 where I have the final solution) for details on how I created the bridge & VLANs on the Mint host.
https://www.linuxquestions.org/quest...ns-4175674388/

This is disappointing because enp2s0.300 is the VLAN I need right now.... :)
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