I was having problems getting some man pages. Attempting to diagnose my problem I went to " 4.Browse the repository index:" .
I clicked on the links titled
Debian stretch
<https://manpages.debian.org/contents-stretch.html>
Debian stretch-backports
<https://manpages.debian.org/contents-stretch-backports.html>
Neither link responded while similar links for jessie, testing, and
unstable worked as expected.

