I noticed it's in iManager but not in the DNS/DHCP manager/client. I read some posts about it and one user said you have to set it up every time you go into iManager. Seems like a waste of time.

I am trying to set up a new firewall and am taking all of my public IP addresses out of DHCP and using internal ones. While working on this I got the message about scope settings, etc.

So is it necessary?