Unknown router appears in my network

[s8b]

An unidentified router recently appeared on my network. I have never had this happen before. Screenshot attached. The Linksys E4200 is not mine.

 

[kegobeer]

It sees the router because it's on the same subnet you are using. It probably belongs to a neighbor. Nothing to worry about.

 

[s8b]

There are many neighbor networks that show up on the wireless network list, however this is the first time I have ever seen a router on MY secured network. Weird.

 

[kegobeer]

Your router sees it. It's not on your network.