For now I have added the host to `/etc/hosts`: The DNS resolution error is gone, but now the connection itself fails:
https:400 URI Failure Transient-Failure: true FailReason: Timeout Message: Verbindung mit packages.XXX.de:https nicht möglich: URI: https://packages.XXX.de/XXX-core/ubuntu/dists/noble/Release To me this looks like the problem is the `Transient-Failure: true`: APT then does not terminate as it still hopes, that the transient error will go away and the `http[s]` sub-process will then be able to succeed. But as this has been the last try, the queue is now empty and APT will hang indefinitely. Since 2021 there's the APT option `--error-on=any` to turn _transient_ errors into fatal errors; see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=594813 → https://salsa.debian.org/apt-team/apt/-/commit/c7123bea6a8dc2c9e327ce41ddfc25e29f1bb145 I'll try `APT::Update::Error-Mode "any";` next. TBC… ** Bug watch added: Debian Bug tracker #594813 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=594813 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2139418 Title: apt-get update stalls infinitely if DNS resolution fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2139418/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
