Subject: Re: Odd problem FTPing via nat/ppp?
To: None <,>
From: John Kohl <>
List: current-users
Date: 09/02/1998 10:50:27
>>>>> "Olaf" == Olaf Seibert <> writes:

Olaf> Around the offset in the file that was mentioned (0x4988) there are only
Olaf> a lot of zeroes. So while the theory is a good one, it does not seem to
Olaf> apply here (unless the IP headers are part of the problem).

This suggests that it's a line configuration problem somewhere near
William Ferry's ISP.  There's a concept known as "minimum ones density"
on some data lines (e.g. T1).  If the ISP or telco has misconfigured the
data line, big blocks of zeros end up showing this kind of behavior.
There was a similar problem near maybe 2 years ago.
Chris Demetriou had a sample ping packet fill pattern which would show
the errors pretty dramatically.

==John Kohl <>, <>
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