Open NAT for PS4 concerns
I have AT&T U-Verse with an ARRIS NVG589 and I know I need to go to the router IP address then Firewall-> NAT/Gaming and add PSN & PS4 IP to the device list. My concern is that it pops up the warning "The change you are attempting to make may cause AT&T U-verse TV to stop working properly." My concern is, is this just a precautionary warning, AT&T covering their bases since it says "may" or is it a warning I should take serious and not add my PS4s to the device list? I'd hate to mess up all 4 receivers just to play my PS4 games.