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I’m facing a problem with SIP protocol, which required capturing packets from local site with WireShark and remote site with TCPDUMP. When I analyze packages and specifically Register message, I notice Contact Header differs, in local capture Contact Header figure with a character "*" and remote Contact headers it appears with a double character of "@". Both files are open with same Wireshark version. Wireshark winpcap 4.1.2 version. Can't not figure what's going on.

I’m facing a problem with SIP protocol, which required capturing packets from local site with WireShark and remote site with TCPDUMP. When I analyze packages and specifically Register message, I notice Contact Header differs, in local capture Contact Header figure with a character "*" and remote Contact headers it appears with a double character of "@". Both files are open with same Wireshark version. Wireshark winpcap 4.1.2 version. Can't not figure what's going on.