WRT1900AC- Need Independent Verification by Someone

Okay, if there is someone out there with a WRT1900AC Router with the current firmware, I'm looking for a volunteer to go the "Shields Up" website ( https://www.grc.com/x/ne.dll?bh0bkyd2 ) and perform a port scan test on port 52147 and advise if it is reported as open, closed, or stealthed on your router.

Here is the background on my issue:

https://community.linksys.com/t5/Wireless-Routers/WRT1900AC-Open-Port-52147-Security-Vulnerability/td-p/919954

It was suggested that this port is open on the router for Smart Wifi services. But I have been unable to find anything authoritative that documents the such a purpose for that port on this router. In addition, I am seeing frequent connections in the incoming router logs on that port from random IP addressees. I want to rule out a potential security vulnerability before I resume using this product.

Please also indicate if you have the Smart Wifi account set up on the router.

Thanks,

Jeff