Test your local network's connection to your gateway, ISP, and Internet locations. Could help getting your ISP to come fix issues at your residence.
I have had a recurring issue with my Comcast Xfinity Internet that I can't seem to fix. I wrote this to run on a Raspberry Pi in my local network continuously, so that I can figure out exactly where the issue is in the network and bring this to my ISP to see if they can help fix it.
See the associated GitHub project and issues for next steps.
MIT license.