Wireshark does not show fragmented SIP packets

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The Problem

Wireshark does not show fragmented SIP packets (usually INVITE packets), it looks like this in the Wireshark interface:

Wireshark fragmented pcap.png



The Solution

Disable (uncheck) 'Reassemble fragmented IP datagrams' option.

The option is available under Edit --> Preferences --> Protocols --> IPv4 window Wireshark reassemble setting.png

With the option Reassemble fragmented IP datagrams' disabled, Wireshark will display a fragmented SIP message

Wireshark not fragmented pcap.png

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