DHCP and static IP on a single interface: static IP disappears

I recently migrated my Ubuntu Server to an OpenStack environment. I needed two different IP-addresses, and it seemed me wise to keep the first (primary) IP-address assigned by DHCP, and then the second one static.   Due to apparent OpenStack restrictions at my current provider, the easiest way was to assign both IP-addresses to the same… Continue reading “DHCP and static IP on a single interface: static IP disappears”