[SR-Users] Acknowlidging BYE in advance using t_reply

Hi, I'd like to ask you whether it is a good idea to acknowledge a BYE message in advance using t_reply("200", "OK") on my border proxy. Not acknowledged BYE messages by clients cause me problems in the middle of my network. Is there any problem with this behavior from Kamailio side, from script side or from SIP side? Do you have any experience with such logic manipulation? I am aware that this is not a proxy function, but it would solve many problems. My script is as follows: if (loose_route()) { if (is_method("BYE")) { setflag(1); # do accounting ... t_newtran(); t_reply("200", "OK"); } route(RELAY); } My test shows that 200 OK from client are absorbed. Also if there is no reply from a client, Kamailio does not generate 408 Request Timeout. I'm using older version kamailio 3.1.0 (i386/linux) 21a375. Thanks for an advice Efelin