[SR-Users] REFER packet - Kamailio gives request_uri instead request-uri -

Hello, i test on refer packet on Kamailio 5.3-dev . it gives route_uri (@route_uri) instead of request-uri ($ru). Could you give me help about it please. Thanks. Packet 2018/11/15 10:51:20.522512 192.168.1.109:5080 -> 192.168.1.120:5060 REFER sip:100@192.168.1.120 SIP/2.0 CSeq: 1 REFER From: <sip:105@192.168.1.120;transport=UDP>;tag=10215SIPpTag001 To: <sip:100@192.168.1.120;transport=UDP>;tag=7e3fb504 Call-ID: 1-10215(a)192.168.1.109 Max-Forwards: 70 Route: <sip:192.168.1.120;lr> Via: SIP/2.0/UDP 192.168.1.136:5080;branch=z9hG4bK-10215-1-7 Contact: <sip:105@192.168.1.136:5080> Refer-To: <sip:103@192.168.1.120> Referred-By: <sip:105@192.168.1.120;transport=UDP> Content-Length: 0 1(48532) WARNING: {1 1 REFER 1-10215(a)192.168.1.109} <script>: REFER in WITHINDLG [$ru sip:192.168.1.120;lr ] 1(48532) WARNING: {1 1 REFER 1-10215(a)192.168.1.109} <script>: REFER MYROUTE [ru sip:192.168.1.120;lr ] [route_uri sip:192.168.1.120;lr ] [ rU <null> ] Scenairo SIPP UAC -> Kamailio - > UAC 2 After call answered , SIPP send REFER request as above.