The WAN port needs to be a LAN port, or all devices on all 3 ports need to be on the same network .The LAN needs a DHCP server. However, I need to make sure the DHCP server ignores the WAN port.
If searched through this forum and tried all sorts of things, and I can seem to get the WAN port to be ignored from the DHCP.
Thanks.
Isn't this a xy-problem? (XY problem - Wikipedia)
What is the real X, because the Y is made rather difficult.
If the WAN port is a LAN port, the LAN ports are bridged, and filtering DHCP with UDP port 67 and UDP port 68 if not easy (L3 filter on a L2 connection) with the firewall, unless one is familiar with the bridge firewall ???
https://openwrt.org/docs/guide-user/firewall/fw3_configurations/bridge