Create these two files:

root@USCT3-P4-SHG:/etc/systemd/network# cat 10-dummy0.netdev 
[NetDev]
Name=dummy0
Kind=dummy
root@USCT3-P4-SHG:/etc/systemd/network# cat 20-dummy0.network 
[Match]
Name=dummy0

[Network]
Address=169.192.77.34


Then run:
systemctl restart systemd-networkd