From ArchWiki

A macvtap device is a newer device driver that enables Network bridge-like networking, but with a much simpler set up process. This is most useful for virtualization. For most purposes, the only disadvantage compared to a network bridge is that the host will not be able to communicate with the guests via this network.

Setting up a macvtap network

Create a macvtap interface macvtap0 that is bridged to eth0 with these commands:

# ip link add link eth0 name macvtap0 type macvtap
# ip link set macvtap0 up

See also