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From: Marcin Wisnicki <mwisnicki+freebsd@gmail.com>
Date: Wed, 28 Jul 2010 21:36:56 +0000 (UTC)
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Subject: Re: Strange contents on some ftp mirrors
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On Wed, 28 Jul 2010 20:02:40 +0200, Dominic Fandrey wrote:

> On 28/07/2010 17:58, Marcin Wisnicki wrote:
>> 
>> I think you could also detect inconsistent mirror by comparing
>> modification time of package against mtime of INDEX. If pkg is newer
>> than INDEX then it's a sign of incomplete sync.
> 
> True, but if the check does not fail it still doesn't mean that the
> package is valid. Checking against the master (it will check size and
> time) is the safest method, I think

What do you mean by master ? If you think about ftp-master then it's
password protected. AFAIK there is no publicly available ftp site
that is an authoritative source, ftp.freebsd.org is synced just like
any other mirror.
You can see in my initial post that it was even less up-to-date than
ftp.fr.freebsd.org.