# tcpdump -n net 64.2.142.0/24
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lan, link-type EN10MB (Ethernet), capture size 262144 bytes
21:20:32.443506 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:32.443515 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:32.542751 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:32.542761 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:32.743066 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:32.743073 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:33.143598 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:33.143609 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:33.943281 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:33.943294 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:35.544105 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:35.544121 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:38.744237 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: INVITE sip:13102457221@outbound.vitelity.net SIP/2.0
21:20:38.744251 IP 10.1.1.1 > 64.2.142.109: ip-proto-17
21:20:38.939991 IP 10.1.1.1.5060 > 64.2.142.109.5060: SIP: OPTIONS sip:outbound.vitelity.net SIP/2.0
21:20:38.982732 IP 64.2.142.109.5060 > 10.1.1.1.5060: SIP: SIP/2.0 404 Not Found