Re: Traceroute Mal-formed packets

[Casey Carter <ccarter@cs.uiuc.edu>]

Your explanation is incorrect.  What you refer to as "UDP header length" 
is actually UDP data length.  The UDP header is always 8 bytes long, and 
the data can have any length that it wants, not necessarily a multiple of 4.

Maybe it would help if you post a complete tcpdump of this interaction 
(ideally, on the router) for us to examine.

John McLaren wrote:

> Thanks Pekka.. you're absolutely right. I have re-posted the article in
> HTML format:
>
> http://campus.murraystate.edu/tsm/tsm352/articles/traceroutebug.htm
>
> JMcLaren
>
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--
Casey Carter
Casey@Carter.net
ccarter@uiuc.edu
AIM: cartec69



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