====== apt-cacher-ng ======

[[https://www.unix-ag.uni-kl.de/~bloch/acng/html/index.html|Apt-Cacher-NG User Manual]]

====== Issues ======

===== Reading from proxy failed - select (115: Operation now in progress) =====

[[https://serverfault.com/questions/1005877/cannot-update-apt-https-repositories-via-corporate-proxy-reading-from-proxy-fa|Cannot update apt https repositories via corporate proxy (“reading from proxy failed”) on Debian 10 buster]]

Solution: bump to ''apt-cacher-ng=3.5-3'' from ''debian-bullseye''.