Re: Why apt suddenly lists packages from "stable-backports" as upgrade candidates for packages from "stable"?

["Alexander V. Makartsev" <avbetev@gmail.com>]

On 06.12.2025 09:14, Max Nikulin wrote:

> ...
>       I do not see any issue with deb.debian.org.
>       
>       
>       Is there a chance that other mirror was actually used due to e.g.
>       the auto-apt-proxy package installed on your machine? 
    No, I try to keep the setup simple.
    
> Do
>       you have http_proxy environment set? 
    No, I don't use any proxies.
    
> I
>       would not exclude ISP provider's mirror forced through a
>       transparent proxy.
>       
>       
>     
    My ISP doesn't know anything about sites I'm accessing or about
    files I'm downloading, because I use DNS-over-TLS on my router in
    addition to HTTPS protocol to access "deb.debian.org" and other
    sites.
    So, no, I don't think my ISP is capable to do the impossible. :)
    
> By
>       the way, you may specify deb.debian.org in addition to the
>       selected mirror, so if one mirror is not updated, files may be
>       fetched from another source.
>       
>       
>     
    I don't think that will be a good idea. How can I be sure that
    Fastly won't serve me files again from their outdated CDN cache?
    
> There
>       was a thread on hiding security updates by serving old files, but
>       the main repository, unlike security, is not updated frequently
>       enough require fresh enough files through apt configuration:
>       
>       
>       Vincent Lefevre. Re: apt config options to specify the CA of the
>       https repository? Sun, 21 Sep 2025 23:51:17 +0200.
>       
> <https://lists.debian.org/msgid-search/20250921215117.GB346166@qaa.vinc17.org>
>       
>       
>     
    Interesting. 
    I wonder if apt can somehow check if repository was updated, being
    in the process of updating, or outdated for a few days. Maybe by
    checking some flag-file and warn user about inconsistency...
    For now, if apt will be acting up again, I will be checking manually
    if the Release file of "proposed-updates" repository is recent
    enough.

--

 With kindest regards, Alexander.

 Debian - The universal operating system
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