Restarting <interface>-cfg.service may cause the interface's IP addresses to be flushed. If the default gateway goes through that interface, then the default gateway is deleted. So we need to restart network-setup.target.
Restarting <interface>-cfg.service may cause the interface's IP addresses to be flushed. If the default gateway goes through that interface, then the default gateway is deleted. So we need to restart network-setup.target.