So, my fiancée and I have been playing some Destiny. We have a PS4 each and play on the same wireless network. This game stupidly refuses to allow people on the same network playing together so we found a work-around in manually changing the DNS server on one of the PS4s to Google's public server 184.108.40.206 - 220.127.116.11.
Curious as I am, however, I obviously wonder why this solved our problem!? Anyone care to explain?