set logging class virtio level debug

create interface virtio 0000:00:06.0
create interface virtio 0000:00:07.0

set interface state virtio-0/0/6/0 up
set interface state virtio-0/0/7/0 up

set interface l2 xconnect virtio-0/0/6/0 virtio-0/0/7/0
set interface l2 xconnect virtio-0/0/7/0 virtio-0/0/6/0

show logging

show version