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Bug#636292: MD5Sum mismatch is due to multiple DNS queries!

forcemerge 636292 582352
>>>>> "JN" == Jonathan Nieder <jrnieder@gmail.com> writes:
JN> 積丹尼 wrote:

>> You can test it yourself. Turn on verbose debugging in your DNS server,
>> and do apt-get update, and check the log. Voila, two queries for each one line
>> in sources.list!

JN> That particular consequence of mirrors' use of round-robin DNS is
JN> tracked as Bug#582352.  As far as I can tell, it violates the HTTP
JN> spec and can confuse proxies even if the clients are fixed.  I would
JN> be willing to carry out a protocol change to make this work (doing one
JN> DNS query and using the IP as hostname from then on), but it's not
JN> clear anyone involved is interested, so for now I just avoid
JN> round-robin DNS in sources.list on machines I manage.

JN> Thanks for the reproduction recipe.
I'll forcemerge the bugs. That will swing them into action.

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