Hi,
Would like to thank Bob for the suggestion that put me down the right path.
Bridging was the magic component that was required.
I thought I'd provide a bad sketch of the setup.
ISP A - 4G WAN Router (DHCP, with local network.) (On this…
Challenge:
I have a "device" on a remote network connected to a UTM via a RED. This device outputs UDP packets as broadcast on that local network. The server that normaly forwards them is down(remote, not very easy to get online - but will be up eventually…