I like their window manager, pop-shell, and use it on Fedora. I used to daily Pop but just can’t stand Ubuntu.

Ironic

You could just setup a separate namepace with IPv6 disabled and move the process into it. I’d be more detailed, but this comment is one eyed and very sleepy, let us know how you go.

Don’t do that. You can install them from the Ubuntu repos.

Sudo apt install tumblr-gimmick