ubuntu-core-initramfs project is not used on Ubuntu 20.04 LTS servers and desktops.
However I also don't think this is caused by initramfs.
It would help for you to check your NetworkManager configuration, netplan configuration and ifupdwon configurations.
ubuntu- core-initramfs project is not used on Ubuntu 20.04 LTS servers and desktops.
However I also don't think this is caused by initramfs.
It would help for you to check your NetworkManager configuration, netplan configuration and ifupdwon configurations.