I have a new Raspberry Pi4B that I installed openSUSE 15.3 and have everything working like I want.
I could not get pihole to install the way it works in ubuntu 20.04 but found this podman installing pihole as a container.
What I had to do to get around the new ip is I had to add the original ip to the network manager as a second ip - that works as it is not answering the second ip - my test ip now cannot be used by my test pi4b.
Something owns the redirect from 0.0.0.0:80 to the container - I cannot find it.
I got everything fixed without the extra ip address
I stopped the pihole
ran podman rm pihole
rm -rf /var/lib/containers
reinstalled pihole via podman with the correct ip.
so yes - you have to delete and remove the pihole container the hard way.