When I run with debug=3, I don't see message with "reply forward to".
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: tm [t_reply.c:1311]: t_should_relay_response(): ->>>>>>>>> T_code=100, new_code=183
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: tm [t_reply.c:1829]: relay_reply(): DEBUG: relay_reply: branch=1, save=0, relay=1 icode=0
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: tm [t_hooks.c:288]: run_trans_callbacks_internal(): DBG: trans=0x7fc307dcf4b8, callback type 32, id 0 entered
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: <core> [msg_translator.c:2278]: generate_res_buf_from_sip_res(): old size: 993, new size: 896
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: <core> [msg_translator.c:2296]: generate_res_buf_from_sip_res(): copied size: orig:446, new: 349, rest: 547 msg=
SIP/2.0 183 Session Progress
Via:SIP/2.0/UDP 192.168.180.1:5060;branch=z9hG4bK-61208600002ccddf-ac11bf17-1
CSeq:1 INVITE
Record-Route:<sip:10.25.153.150;lr;ftag=6998741155494809055>
Session: Media
RSeq:39056976
Privacy:none
Require:100rel
Allow:ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,NOTIFY,UPDATE
Content-Type:application/sdp
Content-Length:198
v=0
o=BroadWorks 209562 1 IN IP4 10.25.148.43
s=-
c=IN IP4 10.25.148.43
t=0 0
m=audio 15944 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:20
Aug 31 19:47:21 KAMnet-JAF-TST-01 /usr/local/sbin/kamailio[9487]: DEBUG: tm [t_hooks.c:288]: run_trans_callbacks_internal(): DBG: trans=0x7fc307dcf4b8, callback type 1048576, id 0 entered