I know what is going on however I do not know how to fix it.
I have a Peplink Router (Peplink Balance 580) Firmware 6.2.2 build 3362.
When I static IP WAN2 with IP and give it the GW of the Comcast Router, it fails the DNS check. I shut off DHCP on the Comcast router and also put it in bridge mode with the same results.
WAN1 is being used by FIOS and has a static IP with no issues.
I have an idea as to why it is failing, something with NAT and the two interfaces.
Anyone have any ideas?