Wired connections to NightHawk R7900P Won't connect to internet

[nurserich1]

I have a NightHawk R7900P with version V1.4.1.68_1.3.28. I tried the QoS setting on my router and it changed my wired NAS and other devices addresses to something different (172.....) instead of the router defined IP addresses of (192.....). Now i can't access my NAS and other devices. I am thinking of doing a router factory default reset. Would this be a good idea?

[plemans]

What modem/gateway do you have it connected to? 

have you tried simply powering off the R7900P and rebooting it? 

[antinode]

> [...] I tried the QoS setting on my router and it changed my wired NAS
> and other devices addresses to something different (172.....) instead of
> the router defined IP addresses of (192.....). [...]

   It seems unlikely that a QoS setting could affect any IP address.  I
suspect that you did more than make a QoS change.  I would not expect an
address like "172....." to come from your router.  And there's no need
to hide any of a private address:

      https://en.wikipedia.org/wiki/Private_network

> [...] I am thinking of doing a router factory default reset. Would
> this be a good idea?

   Should be harmless, other than forcing you to reconfigure the thing,
but I wouldn't expect it to solve this problem.  I'd review what's
connected to what.  If necessary, start again, with the router and a
computer, and then build up your more complex network, stepwise, until
the problem reappears.