[SR-Users] Change of source ip address

[Diego Alejandro Ozuna Escalada]

Thanks por the reply,

it's like you suspect, in this scenario the kamailio proxy do some SBC
functions.

I'm doing tests with mhomed parameter. I'll do a feedback after these tests.

regards.

Diego




2014-02-05 14:47 GMT-03:00 Klaus Darilion <klaus.mailinglists at pernau.at>:

> I am a bit confused. I suspect with SBC you mean the Kamailio proxy?
>
>
> On 05.02.2014 14:54, Diego Alejandro Ozuna Escalada wrote:
>
>>
>> When a UA sends an INVITE to the SBC, the responses (back) to UA are
>> being sent with the correct external source IP (X.X.248.194) but if
>> there are retransmissions of these responses, after 6 seconds, the
>> source IP changes to the internal ip (X.X.248.21)
>>
>
> Are you sure it is a retransmission, or maybe it is a new branch of an
> existing transaction, e.g. triggered by a failure route? You can differ
> them by different branch id in the topmost Via header (carefully check the
> last character). If it is really due to a new branch created in a failure
> route, make sure to force the send socket also in the failure route.
>
> PS: If you have a nice working IP setup, e.g. one external interface (used
> by the default route) and one internal interface (a different subnet,
> dedicated routes for the internal network) then you could just set mhomed=1
> in kamailio.cfg and Kamailio can automatically always select the correct
> send-socket.
>
> regards
> Klaus
>
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