--- (12 headers 0 lines)---
Using latest REGISTER request as basis request
Sending to 192.168.253.3 : 5060 (NAT)
Transmitting (NAT) to 192.168.253.3:5060:
SIP/2.0 404 Not found
Via: SIP/2.0/UDP 192.168.253.3:5060;branch=z9hG4bK752c65dd7df383b054d2b87fb5f2df38;received=192.168.253.3;rport=5060
From: <sip:103@192.168.253.15>;tag=1d38c6c0
To: <sip:103@192.168.253.15>;tag=as3e84505b
Call-ID: 419dab3a4b058e484e713f3d619fe5d1@192.168.253.3
CSeq: 2 REGISTER
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:103@192.168.253.15>
Content-Length: 0