Troubleshoot internet connectivity - router or isp issues?

Installing and Using OpenWrt
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I have a Linksys wrt3200acm that has been running openwrt for ~4 years now. In the last month, I lose internet connectivity about once a day. A router reboot fixes it. Comcast/Xfinity have been doing upgrades during that time, so I don't know whether it's my router going south or Comcast issues related to upgrades.

  • the router is running the latest firmware (OpenWrt 24.10.0 r28427-6df0e3d02a / LuCI openwrt-24.10 branch 25.014.55016~7046a1c)
  • openvpn is configured and using protonvpn config. I've tried disabling openvpn, doesn't seem to be related to the connectivity losses.

Any troubleshooting tips welcome! I am very comfortable at the command line, and I was a network operations technician until 2013, but have not done anything very technical since then. Thanks in advance!

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Anything in the logs when it happens?

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Good point. You'd think I'd have thought of that by now, but I haven't yet, only after the reboot. I will make it a point to check the logs before I reboot next time! Thanks for the suggestion!

So it just happened again, and while I can't say specifically what the error was, I saw a lot of openvpn errors. So I stopped openvpn, then restarted it, and internet connectivity came back up. I have it set to connect to random protonvpn endpoints in the US, maybe I'll have to rethink that and just test until I find a stable one (although for over a year it has been very stable in this config). Yay, more testing!

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