A host has just booted up. This host is allowed to send ARP queries for the MAC address of thelocal DNS server before sending gratuitous ARPs to test for duplicate IP addresses on the network.
To increase the number of recently created display filters that Wireshark remembers, increase theFilter display max,list entriesvalue in Wireshark's Preferences window.
You have opened a trace file that has been sent to you and you noticed the timestamp only offers millisecond-level time values. You can enable Wireshark to add themicrosecond detail information to these packets.
During an ideal data transfer process, the TCP Time-Sequence graph plot points should run from the lower left corner to the upper rightcorner in a diagonal line of i-bars.
This packet shows the expanded TCP flags area. The display filter tcp.fiags.syn==1 && tcp.flags.ack==1 and the display filter tcp.fiags=0xi2 provide identicalfiltering results.
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