rohc team mailing list archive

[Didier Barvaux <didier.barvaux@xxxxxxxxxxxxxxxxxxxx>]

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