If your cctv like xiaomi cameras connect to its own cloud network then no problem to view outside home network with digi line.

Yes, exactly described by Anime4000
Unless camera connected to its own cloud service then no need vpn

That sounds a bit too advance for me, is there a specific guide/faqs I can write about setting that up ?
Even with digi blocking portforward?

For this one, all your devices at home needs to be using ipv6? Like do I have to change every single device from using ipv4 to ipv6 or can it be selective only?
If I were to plug 4g usb modem into router, I take it a non hilink (the normal dial up) usb modem is required?
Still trying understand on how this tunnel broker works

This post has been edited by alucard89: Apr 23 2017, 10:23 PM

Thanks, I guess I can start with this
Btw, what firmware router are you using with this ipv6 setup? tomato, ddwrt?
Have you tried on other cellular broadband like Celcom, Digi? So you were still able to access your devices without portforwarding?
I take it the devices needs to be able to support ipv6 as welll