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SMX/CSM/USM : target-refresh-request from new IP

Hello,

I read in the documentation that the SMX/USM/CSM support the target-refresh-request as per RFC 3261 and 6141.

It is not clear to me if the SMX accepts a re-INVITE coming from an IP address which is different from the one used to register and to send the initial INVITE, being the terminal on a public access interface.

I mean that the typical re-INVITE scenario is:

A (from IPaddr 1) REGISTERs to the SMX.

A (from IPaddr 1) INVITEs B.

A receives 200 OK and call is up.

A (from IPaddr 1) re-INVITEs B with a new IPaddr 2 in the SDP.

while I don't understand if it is legal that:

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