At Jonhie's suggestion I have added a rewriting rule for bugs.debian.org,
the following URLs now act as expected:
http://bugs.debian.org/ --> To main bugs page
http://bugs.debian.org/apt --> To the bug pages for APT
http://bugs.debian.org/<pkg> -> To the bug pages for any package
lists.debian.org, packages.debian.org, vote.debian.org and perhaps others
I have forgotten also have redirects but only the first, to the proper
page on www.debian.org.
I intend to make use of this wherever I had used the real URL, such as in
the APT man pages.