So, this issue has evolved a bit, since I posted it. A key point to keep in mind is that both locations use DynDNS and domains to connect to one another. The primary site (12.345.678.90) has Dyn set...

Curious if anyone has encountered this error, recently. I've had these boxes for a few years and thought I knew their quirks. This one popped up after I disconnected the router for a few days after...