PS4 Problem: Connected to internet, can't play online

Having some real problems with my PS4. I'm connected to PSN and the internet but no games will play online. I was playing Destiny fine at the weekend but now, nothing works. I've tried playing with my NAT settings (currently on Type 2) I've port forwarded all the relevant ports, I've disabled the firewall on my router, I've checked UnPnP is enabled...I've done everything I can think of. The internet works fine on every other device in the house and the speeds are fine. The only clue is that during network setup a message plays about my router possibly not supporting IP Fragmentation.

If anyone has any idea as to why this might of happened I'm all ears. Cheers.

Obvious question, but your plus subscription hasn't lapsed has it?

Nope, still has the little yellow plus by my name. One question... I do have a US account which I've used to buy games... If they'd somehow cut me off for doing this they'd let me know right?

EDIT: The plot thickens: The Last of Us multiplayer works fine. The rest though... Not so much.

[iup=3658325]Tafdolphin[/iup] wrote:The only clue is that during network setup a message plays about my router possibly not supporting IP Fragmentation.

Find your optimum MTU and enter that manually on your PS4.

IIRC it should be 1500 for Virgin Cable and Sky Fibre and 1492 for everything else. If that doesn't work try 1400.