I am having an issue with our SonicWALL Pro 4100. I am attempting to set up DHCP over a VLAN on our main subnet (X0) for all of our Global VPN clients. This was working, but now isn't. When clients attempt to log in, they can authenticate, but get stuck on the Acquiring IP step. If I look in the log, the furthest they get is the "DHCP DISCOVER received from remote device" step. The IP is never sent to them. Below is the set up:
I have a VLAN set up off of the X0 (LAN) interface. The IP is 192.168.12.1 with a subnet mask of 255.255.255.0.
I have a Dynamic DHCP entry, enabled, using the interface including IPs 192.168.12.100-192.168.12.254 with gateway 192.168.12.1 using the VLAN interface.
The WAN Group VPN is set up for the Virtual Adapter to use DHCP Lease.
DHCP over VPN Central Gateway is set to Use Internal DHCP Server for Global VPN Clients with the relay IP set to 192.168.12.1.
I'm not sure where to go from here and SonicWALL support has been pretty much a waste of time. Any ideas?