I use several Linux/FreeBSD virtual machines. Their network adapters are configured in the host-only mode. I Have added VLAN tag on the guest interface.
When I try to ping between virtual machines I get "host unreachable" output.
- If I remove the VLAN tags from the interfaces and try to ping, it works perfect.
- VLAN hardware acceleration is not supported by e1000 adapter.
Switch to Virtio adapter:
Open virtual machine configuration > switch to Hardware tab > in the left pane choose Network adapter > in the right pane change NIC Type to Virtio network adapter: