<p>Hello,</p>

<p>Please try applying the attached patch against your 1.11 sources and let me know how that goes.</p>

<p><a href="https://github.com/OpenSIPS/opensips/files/18317/dialog_ACK_cseq.txt">dialog_ACK_cseq.txt</a></p>

<p>Best Regards,<br>
Vlad</p>

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