To configure DHCP over VPN for the Central Gateway
Click Configure.
Select one of the following:
To use the DHCP Server for global VPN clients, select the For Global VPN Clients option.
To use the DHCP Server for a remote firewall, select the For Remote Firewall option.
If you want to send DHCP requests to specific servers, select Send DHCP requests to the server addresses listed below.
Type the IP address of a relay server in the Relay IP Address (Optional) field.
When set, this IP address is used as the DHCP Relay Agent IP address (giaddr) in place of this SonicWall’s LAN IP address. This address is only used when no Relay IP Address has been set on the Remote Gateway, and must be reserved in the DHCP scope on the DHCP server.
Click OK.