Hi Juha, Thanks for the detailed analysis!
On Sun, Sep 21, 2025 at 09:54:50PM +0000, Juha Jäykkä wrote: > The system is configured NOT to install Recommends, i.e. it has > APT::Install-Recommends "false"; I'm afraid by setting this option you are simply opting into running into this kind of breakage and are expected to fix it yourself. > While this is probably a rather uncommon corner case, I still believe > this is a "bug" that needs to be addressed, but how? I agree Recommends > is appropriate instead of Depends, so I guess the only remaining option > is a note in Trixie (and maybe also in Forky) upgrade/release notes > chapter 5 (or maybe 4.5?), so at least other admins of headless systems > using ifupdown-ng have a chance of noticing this before rebooting. Since ifupdown-ng was a new optional package in bookworm *and* a non-standard configuration is required to hit this problem I don't think enough people are likely affected to warrent a release note entry. If you disagree please feel free to send a patch. I think you could simply link to this report from https://salsa.debian.org/ddp-team/release-notes/-/blob/master/source/issues.rst#known-severe-bugs. > P.S. After installing ifupdown-ng-compat, the networking.service was left > in a disabled state - I have no opinion of whether that's better or worse > than enabling it, but this should also be mentioned in whatever note is > written about this: just installing the package is not sufficient. This on the other hand is no expected! Looks like the service was just being installed subtly wrong. 0.12.1-8 should fix it. Thanks, --Daniel
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