KVM guest move from other machines to Rocky 9 network does not work

Recently I try to have Rocky 9 and load KVM to the server. I tried to move some DVM guest from other servers to this rocky 9 server but all experience problem with network. All guest has network unreachable. While newly install guest network works fine.

What is the cause of the problem?

Details, details, details.

How was the network set up in previous hypervisor? Is there anything that does differ?