Stefan Fritsch <sf@sfritsch.de> writes: > # cat /etc/apt/apt.conf.d/11-default-release > APT::Default-Release "bullseye"; Just don't do that. It breaks all normal preferences and will end up preferring "bullseye" over anything else. Including "bullseye-security". Use preferences instead if you need to tweak anything. See apt_preferences(5) Bjørn