[SR-Users] maybe found a bug in TM module - how to proceed?

Hi all, I am using kamailio 4.4.5 in an IMS setup as S-CSCF. I have got problems when trying to deliver an INVITE request to a distinct PSI at an AS. I receive the SIP response "555 AS Contacting Failed - iFC terminated dialog". I collected tshark traces and synchronously WITH_DEBUG kamailio logs. I think, I have found the root cause in the source code of the TM module and would like to issue an official bug report. How to proceed? All the Best Christoph The information contained in this e-mail message is privileged and confidential and is for the exclusive use of the addressee. The person who receives this message and who is not the addressee, one of his employees or an agent entitled to hand it over to the addressee, is informed that he may not use, disclose or reproduce the contents thereof, and is kindly asked to notify the sender and delete the e-mail immediately.