I've got a LBR20 with AT&T that works great with failover to cellular when the WAN drops. I have a static IP address with configured IP address, Subnet mask and Gateway configured under the WAN settings.
The problem is, when my WAN returns, the LBR20 won't let go of the cellular and go back to the WAN. The only way I can get it to return is disable the cell signal entirely, then I need to re-enter the static IP info in the WAN settings (it's getting blanked out? ).
