It was 150 to start when I first got the error. The AI said it needed to be set higher so I set it to 200. I'll change it back, but still getting the error.
OK, it seems your device is connected to an upstream AP. A device on that network is making a DHCP request and the OpenWrt "heard" the broadcasted request.
Did you add wwan to the WAN firewall zone?
Did you alter the WAN firewall zone in any way (as DHCP request is blocked by default on WAN)?
What this whole setup is, is a wireless bridge. The built-in radio gets internet from my home wifi and then through OpenVPN client and then to the eth0 connection which is hooked up to my computer.
I was trying to make a travel router, but I have yet to find a dongle that works to transmit on radio1. The built-in radio is ideal for scanning for and getting connected to any wifi, but so far I can only make it work by connecting to the ethernet connection.
Everything works - it just keeps throwing the error over and over.
This is why you see the error, you allow some unneeded traffic on WAN WWAN. Your WWAN is a DHCP client, so it gives an error when it hears a DHCP request broadcast.
The AI is good at explaining what all the options do, but you're right this is an error for sure. Just trying to learn OpenWrt's complicated system to configure a simple process. Someone needs to make a configuration wrapper package to do all this crap.
This all started with a Network Chuck tutorial where he did all this from the command line and that was an early step where he edited the firewall config manually to do it. The setup does not work if you don't do it I found out. However, much has changed since OpenWrt 21.x.x and I started from scratch using the luci gui and reading wikis about making OpenVPN work. The wikis are dated and inaccurate too so I'm just trying stuff and seeing if I can get it to work as simply as this kind of configuration can be done. Seems like it should be simple, but it's tricky having to setup interfaces, devices, wan, lan, firewall where the smallest error results in a complete non-working setup.
My "knowing what I'm doing" is just trial and error and remembering what works and asking the AI or here to explain things a bit. Even my VPN provider .ovpn files have errors and mistakes I was only able to fix with some AI help. Network Chuck's tutorial and his text file of scripts have several typos and these were just mind boggling to find and debug since he complicated things at the command level the luci gui does with a few clicks.
Lots to learn here, but eventually I'll write it all up and share. I can make a regular router, a wireless bridge, a wired bridge, a VPN client and a VPN server now. My next project is to learn everything about using Wireguard on OpenWrt instead of OpenVPN. Problem is I can't open a port to my home modem for Wireguard but I can for OpenVPN. I'll figure it out someday.