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ipv6 no doubt was designed without the mistakes that ipv4 learned the hard way. Everything from getting rid of useless (and dangerous) flags, to flow identifica

ipv6 no doubt was designed without the mistakes that ipv4 learned the hard way. Everything from getting rid of useless (and dangerous) flags, to flow identification, is beautifully designed. But, there is absolutely 0 reason for Google, Facebook, etc to know how many devices are operating in your home, or which ones they are communicating with. And before the army of drones screams "ipv6 privacy extensions", the battle has already been lost. Unless every request to Google, Facebook, etc was made with a unique ipv6 address, you cannot assume the same level of privacy that an ipv4 NAT provides. Ipv4 makes Google, Faceebook jump through extraordinary hoops to track you and monetize your personal and private life. Ipv6 makes these things trivial (coincidently, both of those companies are pushing ipv6 the hardest despite owning huge swaths of ipv4 space).

GoblinSlayer 5y ago
Presumably you would have a wifi router in that case? Those work as NAT, even support port forwarding configuration.
ddtaylor 5y ago
> But, there is absolutely 0 reason for Google, Facebook, etc to know how many devices are operating in your home Considering every request going to their servers likely already contains a cookie that identifies them entirely it's extremely likely they already have this information.
netflixandkill 5y ago
If you participate in facebook etc apps and services at all they have far more insidious and effective tracking and NAT isn't hiding you at all. Additionally the idea that it is granting you any measure of privacy is only true if you're behind a giant translation block with tens of thousands of unrelated people and a broad enough public range that connection correlation becomes impractical, compressing a single family or roommates behind a single public IP that changes maybe every few weeks accomplishes very little if anything. If you need anonymity that much for whatever purpose, depending on v4 NAT is dangerous at best and you should be looking into anonymous proxies or VPN providers (that also mask ipv6), Onion routing, etc.

GoblinSlayer 5y ago

Presumably you would have a wifi router in that case? Those work as NAT, even support port forwarding configuration.

ddtaylor 5y ago

> But, there is absolutely 0 reason for Google, Facebook, etc to know how many devices are operating in your home Considering every request going to their servers likely already contains a cookie that identifies them entirely it's extremely likely they already have this information.

netflixandkill 5y ago

If you participate in facebook etc apps and services at all they have far more insidious and effective tracking and NAT isn't hiding you at all. Additionally the idea that it is granting you any measure of privacy is only true if you're behind a giant translation block with tens of thousands of unrelated people and a broad enough public range that connection correlation becomes impractical, compressing a single family or roommates behind a single public IP that changes maybe every few weeks accomplishes very little if anything. If you need anonymity that much for whatever purpose, depending on v4 NAT is dangerous at best and you should be looking into anonymous proxies or VPN providers (that also mask ipv6), Onion routing, etc.