Настроил мост теперь уже в /etc/systemd/network/ :)
10-ethernet.network
[Match]
Name=enp3s0
[Network]
Bridge=bridge0
10-bridge.network
[Match]
Name=bridge0
[Network]
Address=192.168.0.104/24
Address=193.168.0.6/24
Gateway=192.168.0.1
DNS=192.168.0.1
хотя:
systemd-networkd.service loaded active running Network Service
куда копать?