Perhaps there is something I am missing but tunnel mode does not solve the
problem. Even if I can then compress the IP header, I have to put another one
back on in order to make the tunnel function, and this thus eliminates the
benefit.
________________________________
From: Didier Barvaux <[email protected]>
To: ROHC Library <[email protected]>
Sent: Monday, August 5, 2013 10:39 AM
Subject: Re: [Rohc] ROHC and IpSec
Hello,
> The problem with your 1 scenario is that you can not use ROHC on the
> full ip udp rtp header because you need the IP header intact for ip
> sec to function properly. If I compress the IP portion of the header
> than IPSec can not learn the ipaddress it needs to continue to send
> the packet along.
It does not work with IPsec transport mode, but it works with tunnel
mode. See https://en.wikipedia.org/wiki/IPsec#Modes_of_operation
Regards,
Didier
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