Hi, As for truncated InRelease file, I decided to run apt-get update multiple times until cached data are complete and neat (No more wget.).
Still, everytime I tried to install task-gnome-desktop to chroot, apt- cacher-ng issues lots of errors after some downloads. Let me focus on avoiding this problem. This looks like apt is doing something different than apt-cacher-ng for fetching packages. Intriguing... Suspecting some kind of race condition, I slowed lo device to 1M Byte/sec using "tc". It slowed download but really didn't prevent 502 errors. So fast connection via lo or virbr0 to apt-cacher-ng is not the issue. Then I looked at what it say on http://deb.debian.org Welcome to deb.debian.org (fastly instance)! This is deb.debian.org. This service provides mirrors for the following Debian archive repositories: /debian/ /debian-debug/ /debian-ports/ /debian-security/ The server deb.debian.org does not have packages itself, but the name has SRV records in DNS that let apt in stretch and later find places. To use it with a sufficiently recent apt, you for instance can put deb http://deb.debian.org/debian unstable main deb http://deb.debian.org/debian-debug unstable-debug main deb http://deb.debian.org/debian-ports unstable main in your sources.list. As of October 2016 the SRV record is _http._tcp.deb.debian.org. IN SRV 10 1 80 prod.debian.map.fastly.net. _http._tcp.deb.debian.org. IN SRV 10 1 80 dpvctowv9b08b.cloudfront.net. If you hit the server behind deb.debian.org directly, either because you use an older apt or because you use a HTTP proxy that does not support SRV records, your requests will get HTTP redirected to one of the CDN instances. If you want to avoid the redirects, you can pick one instance directly. For instance, this also works in your sources.list: deb http://cdn-fastly.deb.debian.org/debian stable main deb http://cdn-fastly.deb.debian.org/debian-security stable/updates main This service is sponsored by Fastly Although I have no idea if apt-cacher-ng takes care SRV record, I changed chroot apt line and tested. Wow, no more problem for downloading debs to install task-gnome- desktop. So, does apt-cacher-ng support SRV records? Can it be taught easily? Or should we recommend to use cdn-fastly.deb.debian.org URL for apt line. Osamu
