@pillaicha i was using kerala vision uptil a few days back so when i changed my nat to 1 in ps4 it shows nat 2 instead and enable upnp too. sometimes it shows Nat Failed but when you restart the router and connect again it shows nat 2 and it works. now I've moved on to railwire as kerala vision speeds are very inconsistent i had a 60M 1000G fup plan where i barely got 30M speeds on speed tests. railwire speeds are consistent but they have ps4 ports blocked so my nat is back 3 again :/ but as per other threads im contacting customer service to fix it.