Issue Changing Main IP Adresse - Ineffective after restart

[p0se]

Server operating system version

Ubuntu 22.04.1 LTS

Plesk version and microupdate number

Plesk Obsidian Version 18.0.47

Hello

I have added an IP address in the Plesk web interface.
This has changed the primary IP address of the server.

To fix this I made the following change

https://support.plesk.com/hc/en-us/articles/115002822565-Plesk-IP-address-is-not-removed-Cannot-remove-the-IP-address-because-it-is-the-primary-IP-address-of-a-network-interface

I set the old UP to main='true' and the new IP to main='false'.
The change took effect directly in the web interface. The old IP was displayed again as the primary IP.

After restarting the server, the new IP address is used as primary again.
Via IP a I now see that even after changes via the database, the old IP is listed as secondary.

    inet 45.67.139.NEW/24 brd 45.67.139.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet 45.67.139.OLD/24 brd 45.67.139.255 scope global secondary eth0

How can I give the new IP the secondary status?

 

[p0se]

If I look into the file /etct/netplan/10-plesk.yml, there is also only one entry for the new IP.

network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
      addresses:
        - 2a0e:97c0:3e2:1b5::/64
        - 45.67.139.new/24