[archlinux]$ pacman -Sy libvirt
[archlinux]$ pacman -Sy qemu
[archlinux]$ ls /usr/bin/virt*d
....
/usr/bin/virtnetworkd
/usr/bin/virtnodedevd
/usr/bin/virtqemud
/usr/bin/virtstoraged
[archlinux]$ cat /etc/systemd/network/20-ethernet.network
[Match]
Name=enp2s0
Name=br0
[archlinux]$ sudo ip link add name br0 type bridge
[archlinux]$ sudo ip link set enp2s0 master br0
[archlinux]$ sudo ip link set br0 up
[archlinux]$ ip address show br
03: br0:
link/ether 3e:a9:ee:8f:eb:64 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.7/24 metric 1024 brd 192.168.0.255 scope global dynamic br0
valid_lft 259129sec preferred_lft 259129sec
inet6 fe80::3ca9:eeff:fe8f:eb64/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever