Here is how my Sonicwall was just reconfigured to be:
X0: 10.0.0.x LAN
X1: Primary WAN
X2: 10.0.1.x LAN
X3: Backup WAN
The computers on the X0 subnet can ping and see all the computers in the X2 subnet. However, when someone on the X2 subnet tries to ping someone on the X0 subnet, it always resolves to the X2 gateway.
What do I have to configure in order to get this to work properly.