Thanks for reporting. Looks like this package was removed because it failed to build. See https://launchpad.net/ubuntu/+source/mldonkey/+publishinghistory and https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972211 for more details.
** Bug watch added: Debian Bug tracker #972211 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972211 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1926154 Title: Package mldonkey-server is missing in the universe sources for hirsute To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mldonkey/+bug/1926154/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs