Hi,
a solution in this case could be making usage of Path header (https://tools.ietf.org/html/rfc3327).

You have to load the path module 

http://www.kamailio.org/docs/modules/devel/modules/path.html

and enabled its usage in registrar module 

http://www.kamailio.org/docs/modules/devel/modules/registrar.html#registrar.p.use_path

If you plan to use REGISTER replication through t_replicate() just call add_path() before replicating the message to the other server(s).
If you use a shared database with db_mode = 3, call msg_apply_changes (http://www.kamailio.org/docs/modules/devel/modules/textopsx.html#textopsx.f.msg_apply_changes) before saving the contact. In this case also be sure to set path_check_local parametr of the registrar module (http://www.kamailio.org/docs/modules/devel/modules/registrar.html#registrar.p.path_check_local) to 1.

Cheers,

Federico

On Mon, Feb 1, 2016 at 9:10 AM, Jurijs Ivolga <jurij.ivo@gmail.com> wrote:
Hi Alex,

You are right. :)

With kind regards,

2016-02-01 10:09 GMT+02:00 Alex Balashov <abalashov@evaristesys.com>:
On 02/01/2016 02:59 AM, Jurijs Ivolga wrote:

I think you need to make record routing, so it will keep initial(to what
user registered) Kamailio in signaling path.

Ah, no. Record-Route is for INVITEs only. You're thinking of Path.

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