Why filters like ip == anything, ipv6 == anything, tcp == anything, http == anything, etc, any_protocol == anything are valid? What do they represent, is there any use case for these filters.
You can use such filters to match the packet bytes, if you wish. For example:
tcp == e1:90:1f:90:c0:99:3f:0f:5b:f7:83:25:50:10:04:02:e1:eb:00:00
How useful is that? I don't know. Wireshark merely provides you with the ability to filter just about anything you want, but it's up to the user to decide what's useful or not. Other filters besides equality might be more useful though, for example:
dns contains "wireshark"
Asked: 2021-02-19 14:49:20 +0000
Seen: 265 times
Last updated: Feb 19 '21