[Kamailio-Users] incorrect tag in ACK message

[Alex R.S.M]

Hi,

I made a simple SIP test call. The end point reply to kamailio with 180, 200 messages. The end point includes "tag=1_1555_t58918_125k" in TO field of these messages. However, kamailio reply with ACK message that includes a random tag (tag=5f08ae5f) in TO field. This tag is not the same as the one sent by the end point:

1.1.1.1   end-point ip address
2.2.2.2   kamailio ip address 

INVITE 
From: <sip:1.1.1.1 at 2.2.2.2>;tag=snl-1226930829-1404351227071264-11
To: <sip:14078789913 at x.x.x.x;user=phone>
Call-ID: 9280396221-9479318750707221-11-7604239022

180
From: <sip:1.1.1.1 at 2.2.2.2>;tag=snl-1226930829-1404351227071264-11
To: <sip:14078789913 at x.x.x.x;user=phone>;tag=1_1555_t58918_125k
Call-ID: 9280396221-9479318750707221-11-7604239022

200
From: <sip:1.1.1.1 at 2.2.2.2>;tag=snl-1226930829-1404351227071264-11
To: <sip:14078789913 at x.x.x.x;user=phone>;tag=1_1555_t58918_125k
Call-ID: 9280396221-9479318750707221-11-7604239022

ACK
From: <sip:1.1.1.1 at 2.2.2.2>;tag=snl-1226930829-1404351227071264-11
To: <sip:14078789913 at 2.2.2.2;user=phone>;tag=5f08ae5f
Call-ID: 9280396221-9479318750707221-11-7604239022

How can I force it to send the correct tag?

Thanks,
AR

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