In trying to troubleshoot an L2TP tunnel I had to grab a packet trace.
In the initial packet from the LAC, I'm seeing the L2TP header
(value CC 02) setting a bit (6th bit) that RFC2661 says MUST be
zero.
Ethereal shows the reserved bit values as '.' (not the true value).
Although these bits should be ignored when received , I wondered if
Ethereal should better show these reserved bit values and not mask
them out? (is there an option to not mask them?).
A packet trace is attached.
If replying, please do so directly as I am not subscribed to the list.
thanks,
Garry Peirce peirce@xxxxxxxxx 1-207-581-3539
============================================
== Network Analyst
== UNET Technology Services, Network Operations
== University of Maine System
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File: 16150102.dmp
Date: 16 Feb 2005, 15:01
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