the 10.x.x.x and the 192.168.x.x IP ranges are all private IPs and ultimately doesn't matter what IP is used as long as it is the same when you put it into the ATV.
PlexConnect IP from the terminal/CMD window shows you an IP of 192.168.0.69 then that's what you need to put into the ATV DNS setting. If it shows something else, then put that in.
Tho i have to agree, the oversight in the screenshot missmatch can make it a bit confusing.