http://ftp-master.metadata.debian.org: Error 503 All backends failed or unhealthy

[Derrick Karpo <dkarpo@gmail.com>]

Hello.

I searched the archives but it doesn't look like anyone reported this
yet.  While trying to view the changelog for the latest Debian stretch
kernel (http://ftp-master.metadata.debian.org/changelogs//main/l/linux/linux_4.9.82-1+deb9u3_changelog)
I received this error from Varnish:

<snip>
Error 503 All backends failed or unhealthy

All backends failed or unhealthy

Guru Mediation:

Details: cache-mdw17332-MDW 1520426908 2317177243

Varnish cache server
<snip>

Derrick