Router firmware upgrade, then PuTTY warnings?
I'm guessing (emphasis on guessing) that this relates somehow to my router firmware upgrade, just given the timing, but on the other hand, why would that have any effect on the Linode's RSA key fingerprint? It doesn't make sense to me other than the fact that the router does sit "in the middle" of this connection. When I connect to my Linode using a device off my LAN (my smartphone), I get no warning, and the key as reported by "ssh localhost" is different than the one reported when I connect from my LAN.
In short, how worried should I be? I suppose I have some reading to do before I understand this, but I'm hoping someone can shed some insight.
"Internal IP address" as in another machine on your LAN, or as in some crazy man-in-the-middle thing in the new router firmware itself?