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Bug#838441: apt-get update fails with "Hash Sum mismatch", mixes hashes between tar.gz and tar file



(mhh, I wonder why I missed the initial report…)

On Sun, Nov 13, 2016 at 08:15:57PM +0100, Markus Wanner wrote:
> > Acquire::http::Proxy "http://10.137.255.254:8082/";;
> 
> Out of curiosity and hopefully narrowing down the issue: What kind of
> proxy is this on your side?

Another good point would be running apt with:
-o Debug::pkgAcquire::Worker=1 -o Debug::Acquire::http=1

That has a bunch of output, so perhaps add: 2>&1 | tee filename.log

And is "repeatedly" meant to refer to "reproducible all the time" or
"happens often, but no obvious pattern"?

Interesting is the failure in copy ("E: Failed to fetch copy:") as that
is supposed to "just" move files around without (un)compression – and we
have passed the stage proxies could interfere as the download itself
verified (or not, maybe it IMS hits in some way and copy is supposed to
verify it – there are various ways such a not-modified state can be
reached and proxies are notoriously bad with it…).

btw: It is best to run apt with the least amount of config usually. The
mentioned config options are rather special case and especially the
"Acquire::BrokenProxy" one doesn't even exist… (I looked once, it seems
to have existed ~10 years ago for one year in no stable release and the
name was very bad for what it actually did…). Rule of thumb: If you
don't know what you are doing, use neither – unfortunately it seems the
people commonly answering questions on q&a-sites tend to be in the very
vocal "no idea, but I get points for posting stuff anyhow" group.


Best regards

David Kalnischkies

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