I have two sonicwalls exactly the same at different locations. Both are Sonicwall 2400. One of them has a WAN interface that is not greyed out (ie. hard default interface) and the other is greyed out like it's supposed to. Quick background is I didn't configure these so I'm coming in halfway to troubleshoot. The one that that is not greyed out doesn't have an option to add dns or default gw when I edit it. It acts like a custom interface. There are no other WAN interfaces either. They have the same firmware versions as well. What happened to the default WAN interface?