IPv6 in the future and privacy. NAT?
by xlucas from LinuxQuestions.org on (#58PVH)
I tried to made the subject of this topic as brief as possible and contain as much information as it could. Anyway, this is not just one question...
First, it calls my attention that after so long since IPv6 exists, IPv4 remains so prevalent. IPv6 would also make it easier for the spy giants to do their dirty work, if I understand it well, so it's also surprising that they aren't pushing to complete the transition sooner. Why is this? Maybe I'm misinterpreting the intention of IPv6 and it's never supposed to completely wipe out IPv4. Is it so?
Which leads me to a second question. What can we expect that will happen in the future with this? It is my impression that many application programs exist that wouldn't work if the internet were purely IPv6, but the core programs that make things work, the most fundamental pieces of software, have been ready for an IPv6-only internet for very long. Am I right? Still, I suspect this couldn't be changed in an instant. Too many things would stop working.
And particularly, I know NAT would not be necessary if the internet were IPv6 only. But... is it feasible to use NAT over such a network? Like, suppose my ISP gives me a IPv6 address, but behind my router, my LAN uses IPv4. Then maybe in the future, routers wouldn't even support a NAT and each computer would connect directly to the ISP via its own IPv6 address, yet, I suppose I could plug a computer there and install software that would produce a NAT and provision the rest of my network with internet access via IPv4. Would that still work? And... if one day even most software were IPv4-incompatible, would I be able to put an IPv6 LAN behind a NAT with the ISP on the other side?
Because there's so much I don't know about this, I may even be saying things that don't make a lot of sense, so excuse me if that is the case. I am just very curious about the matter. Thank you so much!
First, it calls my attention that after so long since IPv6 exists, IPv4 remains so prevalent. IPv6 would also make it easier for the spy giants to do their dirty work, if I understand it well, so it's also surprising that they aren't pushing to complete the transition sooner. Why is this? Maybe I'm misinterpreting the intention of IPv6 and it's never supposed to completely wipe out IPv4. Is it so?
Which leads me to a second question. What can we expect that will happen in the future with this? It is my impression that many application programs exist that wouldn't work if the internet were purely IPv6, but the core programs that make things work, the most fundamental pieces of software, have been ready for an IPv6-only internet for very long. Am I right? Still, I suspect this couldn't be changed in an instant. Too many things would stop working.
And particularly, I know NAT would not be necessary if the internet were IPv6 only. But... is it feasible to use NAT over such a network? Like, suppose my ISP gives me a IPv6 address, but behind my router, my LAN uses IPv4. Then maybe in the future, routers wouldn't even support a NAT and each computer would connect directly to the ISP via its own IPv6 address, yet, I suppose I could plug a computer there and install software that would produce a NAT and provision the rest of my network with internet access via IPv4. Would that still work? And... if one day even most software were IPv4-incompatible, would I be able to put an IPv6 LAN behind a NAT with the ISP on the other side?
Because there's so much I don't know about this, I may even be saying things that don't make a lot of sense, so excuse me if that is the case. I am just very curious about the matter. Thank you so much!