Start Wireshark from the command line using: wireshark -X lua_script:my_feature.lua
What are you using (e.g., Ubuntu, Kali, Arch)? Wireshark Linux
Wireshark requires specialized permissions to capture traffic, specifically for the dumpcap program, which handles the actual packet capture. Start Wireshark from the command line using: wireshark
Once I know this, I can provide the exact code or commands you need. How to install Wireshark - Ask Ubuntu specifically for the dumpcap program