Sonicwall multiple WAN ranges in DMZ

Hello experts

Our ISP is providing us 2 ranges of IP addresses: and
Sonicwall WAN is setup to use the IP address, and DMZ is set in Transparent Mode, which Transparent Range is the range.

Now, what we would like to achieve is to also use the range in the DMZ.

If I create a new Address Object group that contains both WAN ranges, and try to change the Transparent Range to this new Address Object, I'm getting an error "transparent range not in wan subnet".
I tried to follow kb I assigned the IP to X3 interface, added the interface to LB group. But that didn't resolve my issue.

Thanks for any help you could provide!

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Aaron TomoskyDirector of Solutions ConsultingCommented:
Did you run a cable to x3? You have to put a switch on the wan, and run a second cable to x3 and set that as a second wan. There isn't a way to set multiple ip addresses on one interface, like the guide says.
deewaveAuthor Commented:
Thanks Aaron.
I think I can't work this out using the 'transparent mode' for the DMZ. The only way would be to create a standard DMZ using a static IP, and create NAT Policies to route traffic
Aaron TomoskyDirector of Solutions ConsultingCommented:
I don't know as I've never used the sonicwall dmz. Zones, rules, the public server wizard and extra nat have provided everything I've ever needed. I don't see the need to give servers public IPs when you can nat them so easily.

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deewaveAuthor Commented:
I've changed the IP mode from Transparent to Static (normal) mode, as it isn't possible to have multiple WAN in Transparent mode
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