Am I going mad or is this still an issue? When the router boots, any LAN connected devices seem to pick up an IP address from the WAN interface, while WWAN connected devices will only ever be issued LAN IP addresses.
Is there no way to fix this? Surely the switch can block all traffic until it has finished booting? Its supremely annoying as it means any devices on the LAN connection may not swap over to the correct network/IP until the lease expires on the WAN IP address. It also means that multiple MAC addresses appear to be connected to a single port on the WAN connection.