In Wireshark, the contents of a capture file can be refreshed by pressing Ctrl+R, but this requires tedious manual intervention and navigating to the end of the buffer every time. The only downside to this is that the traffic does not appear live in the analysis application the capture buffer is populated only with the pakcets which have been recorded up to that point.

Packets are written to a capture file on disk, which can then be opened with a packet analyzer like Wireshark. You may also use Wireshark capture and analysis tool.Dynagen and its complementary GUI GNS3 provide the very handy ability to capture traffic sent between emulated devices. To capture all packets from a specific host on the network: Tcpdump: verbose output suppressed, use -v or -vv for full protocol decode To capture all packets on the WAN (the below assumes that interface eth1 is the WAN interface): tcpdump relies on libcap, therefore it can produce standard pcap analysis files which may be processed by other tools. It may be used to capture packets on the fly and/or save them in a file for later analysis. Tcpdump is a network capture and analysis tool.

Wireshark capture packets on my device