How do I report a bug on Launchpad when I don't know which package it affects? I tried just reporting it directly to "Ubuntu", but "Report a Bug" on https://bugs.launchpad.net/ubuntu just redirects to https://help.ubuntu.com/community/ReportingBugs rather than a form for filling out a bug.
In my particular case this is a bug with a 404 link in /etc/sysctl.conf. I have no clue in the world which package would have bugs for this configuration file.