Going IPv6 Only [pdf] • Hacker News Board

Re: Going IPv6 Only [pdf]

#21

Post by lmm » Wed, Jun 27, 2018, 8:17 AM UTC

singularity2001 wrote: post #12

Is it reasonable to hate and avoid IPv6 for fears of further privacy erosion (easier tracking than with IPv4)? With IPv4 my ISP has to shuffle IPs with every reconnect. With IPv6 you could get one IP for lifetime? While ISP that hand out a static IPv4 can exist, it's much more unlikely, whereas with IPv6 it will become the norm.

No, it's not reasonable.

Allocation of IPv4 address by your ISP is not a secure process; if your privacy depends on it your privacy is already compromised. And address allocation policy is independent of which protocol you're using anyway.

Re: Going IPv6 Only [pdf]

#22

Post by icebraining » Wed, Jun 27, 2018, 8:18 AM UTC

singularity2001 wrote: post #12

Is it reasonable to hate and avoid IPv6 for fears of further privacy erosion (easier tracking than with IPv4)? With IPv4 my ISP has to shuffle IPs with every reconnect. With IPv6 you could get one IP for lifetime? While ISP that hand out a static IPv4 can exist, it's much more unlikely, whereas with IPv6 it will become the norm.

Are they that unlikely? My IPv4 is stable for months/years, despite being "dynamic". I don't even run a dynamic DNS client, since it's so rare that it actually changes.

Re: Going IPv6 Only [pdf]

#23

Post by Arnt » Wed, Jun 27, 2018, 8:19 AM UTC

singularity2001 wrote: post #18

lmns wrote: post #16

Earlier quoted context omitted.

You should have a look at the IPv6 privacy extensions. IPv6 doesn't work as you think it does. Your devices use temporary IPs even with a static IPv6 prefix.

Can't trackers just map the prefix to your id, or do many users share a prefix? will look it up...

Sometimes, sometimes.

Most ISPs give you a new prefix occasionally, such as every night. They don't need to, but so many do it anyway that a tracker cannot assume that 2001:a61:2574:a00/64 is the same customer as yesterday. It may be the same, usually isn't, so tracking is very imprecise.

Re: Going IPv6 Only [pdf]

#24

Post by icebraining » Wed, Jun 27, 2018, 8:22 AM UTC

y0ghur7_xxx wrote: post #10

ohazi wrote: post #7

Earlier quoted context omitted.

What do you do if your cellular provider goes IPv6-only, but your home ISP will only give you a v4 address?

> What do you do if your cellular provider goes IPv6-only, but your home ISP will only give you a v4 address? Get a tunnel from he[1] and access the home network through that. [1] https://tunnelbroker.net/

Or use a Tor hidden service, and get end-to-end encryption for free (see https://github.com/AnarchoTechNYC/meta/wiki/Connecting-to-an...)

Re: Going IPv6 Only [pdf]

#25

Post by alex_duf » Wed, Jun 27, 2018, 8:23 AM UTC

ohazi wrote: post #7

Sirened wrote: post #3

I'm glad that someone is finally doing this. We all really need someone to force us to migrate to v6 finally, and I only did that once I realized I couldn't access my home network over cellular anymore.

What do you do if your cellular provider goes IPv6-only, but your home ISP will only give you a v4 address?

I don't think your cellular provider would stop you from accessing ipv4 addresses, it just starts the first hop on ipv6, then tunnels it for you to wherever you're trying to reach.

The ultimate goal being decommissioning the tunnel once the rest of the world is ready (few decades obviously)

Re: Going IPv6 Only [pdf]

#26

Post by kazen44 » Wed, Jun 27, 2018, 8:39 AM UTC

alex_duf wrote: post #25

ohazi wrote: post #7

Earlier quoted context omitted.

What do you do if your cellular provider goes IPv6-only, but your home ISP will only give you a v4 address?

I don't think your cellular provider would stop you from accessing ipv4 addresses, it just starts the first hop on ipv6, then tunnels it for you to wherever you're trying to reach. The ultimate goal being decommissioning the tunnel once the rest of the world is ready (few decades obviously)

a variaty of methods exists that accomplish this, including DS-lite, 6in4, 6to4 and XSLAT tunneling.

Re: Going IPv6 Only [pdf]

#27

Post by okket » Wed, Jun 27, 2018, 8:51 AM UTC

singularity2001 wrote: post #12

Is it reasonable to hate and avoid IPv6 for fears of further privacy erosion (easier tracking than with IPv4)? With IPv4 my ISP has to shuffle IPs with every reconnect. With IPv6 you could get one IP for lifetime? While ISP that hand out a static IPv4 can exist, it's much more unlikely, whereas with IPv6 it will become the norm.

IP client addresses can and do change, be it that they move from landline to mobile or cafe wifi etc. I doubt many use the IP address to track clients for an extended period of time (one hour? one day?).

There are better tools for tracking, like cookies, session IDs, anything that client software voluntarily sends with some request of any kind. Nowadays even with least trackable protocol possible, DNS, as of DNS-over-HTTPS...

Re: Going IPv6 Only [pdf]

#28

Post by [deleted] » Wed, Jun 27, 2018, 8:53 AM UTC

axaxs wrote: post #2

Credit where it's due. I'm generally against anything the big 4 touch, but TMo has been absolutely on the forefront of IPv6. The first time I saw IPv6 in the wild was while on a TMo data connection.

[deleted]

Re: Going IPv6 Only [pdf]

#29

Post by dstick » Wed, Jun 27, 2018, 8:57 AM UTC

I've been following the IPv6 rollout with interest for the last few years from outside the networking / RIR / LIR / ISP community and I have a question if anyone could provide some insights:

ARIN is already out of IPv4, RIPE just finished their last /8 and are now going through the remaining available pile - what happens when they're all gone? Won't the world sort of be forced to migrate?

Re: Going IPv6 Only [pdf]

#30

Post by skrause » Wed, Jun 27, 2018, 9:12 AM UTC

Arnt wrote: post #23

singularity2001 wrote: post #18

Earlier quoted context omitted.

Can't trackers just map the prefix to your id, or do many users share a prefix? will look it up...

Sometimes, sometimes. Most ISPs give you a new prefix occasionally, such as every night. They don't need to, but so many do it anyway that a tracker cannot assume that 2001:a61:2574:a00/64 is the same customer as yesterday. It may be the same, usually isn't, so tracking is very imprecise.

And technically it would be easily possible with IPv6 to have multiple prefixes at the same time. An ISP could give you one static prefix for incoming connections and then an additional dynamic prefix which rotates between customers every 24 hours (leaving old prefixes actives for a week in case you have long-living connections).