I don't remember for sure which article it was, but I was travelling at the time and looking to auto-select the fastest mirrors. Searching now finds a familiar-looking article and forum answer:
https://linuxconfig.org/how-to-select-the-fastest-apt-mirror-on-ubuntu-linux https://askubuntu.com/questions/39922/how-do-you-select-the-fastest-mirror-from-the-command-line This person seems to have issues with using the 'mirros' solution as well: https://askubuntu.com/questions/319433/making-mirror-mirrors-ubuntu-com-highly-available -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813354 Title: release-upgrader unable to deal with sources.list entries of "deb mirror://" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1813354/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs