search for: 5e8faf01

...in.tld -c sip:username at sip.domain.tld --password guessthis --hostname XX.XX.XX.63 The SIP OPTION is received by Asterisk as follow : OPTIONS sip:username at sip.domain.tld SIP/2.0 Via: SIP/2.0/UDP XX.XX.XX.63:36887;branch=z9hG4bK.304f1a46;rport;alias *From: sip:sipsak at XX.XX.XX.63:36887;tag=5e8faf01* To: sip:username at sip.domain.tld Call-ID: 1586474753 at XX.XX.XX.63 CSeq: 1 OPTIONS Contact: sip:sipsak at XX.XX.XX.63:36887 Content-Length: 0 Max-Forwards: 70 User-Agent: sipsak 0.9.6 Accept: text/plain and it send back : SIP/2.0 404 Not Found Via: SIP/2.0/UDP XX.XX.XX.63:36887;branch=z9hG4...