Re: Problem with External IP on second FG.
and welcome to the forums.
Create a VIP on the 100D for a second public IP (not used on the 100D's WAN interface), and as the 'mapped-to' address you fill in the (private) WAN address of the 30E. You can put the 30E on your LAN, or create a small transfer subnet between an unused port of the 100D and the WAN port of the 30E.
The VIP will even act as a source NAT for traffic coming from the 30E, no need to worry about that.
To make the VIP effective, you need to use it in a policy on the 100D:
src intf: WAN
dst intf: LAN (for example, the port the 30E is connected to)
src addr: ALL
dst addr: my_VIP (!)
no port forwarding
Ede " Kernel panic: Aiee, killing interrupt handler!"