Wireshark is a great and powerful tool, but for too long I’ve just been starting it as root, and ignoring the nag-screen that Debian keeps throwing at me. But it’s dead simple to do it the right way without root privileges.
It’s embarrassing. I just have a mental block when it comes to adding an existing user to an existing group.
sudo adduser user group
or to remove a user from a group
sudo deluser user group