Multiple WS: how to remove secondary default internal IP on Workstation?

I use multiple Whonix Workstation instances. After the last update I saw that my second Workstation instance was set up for two internal IPs: one was that I manually set up and secondary (default): 10.152.152.11. But that IP is already used by another Workstation instance! Please help!

On /etc/network/interfaces.d/30_non-qubes-whonix the IP address that I manually hardcoded is uncommented while 10.152.152.11 is commented with #. But anyway, when I reboot Workstation instance, I still get two internal IP addressed when I type ip a.

Problem solved! I’ve just removed /etc/network/interfaces.d/30_non-qubes-whonix.dpkg-dist file which is located in the same directory as the main 30_non-qubes-whonix configuration file!