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IP addresses through 2024
61–70 of 90 posts
Re: IP addresses through 2024
#62[flagged]
Re: IP addresses through 2024
#63[flagged]
Re: IP addresses through 2024
#64I feel like this blog does not accurately describe how large the ipv6 address space even after accounting for it being reduced by 2^64 for the host portion of the address. If it did it would make the concerned comments about /28 ipv6 network sizes seem very misplaced. A single static ipv4 address is a /32 slice into the ipv4 space and is considered a reasonable to size give out to a single person or even a small busi…
Except that IPv6 is actually not that large. You effectively can't use networks that are smaller than /64, because stateless autoconfiguration can't use any other prefix size (there's an effort to fix it, but it'll take a decade at best)
That was my whole point. There are not 2^128 ipv6 addresses for Individual use but there are 2^64 /64 networks.
If you rent a vps with a ipv6 “address” you will see that you are given a /64 network.
There is no effort to “fix” the bottom 64 bits because it’s not needed. There are enough /56 networks to for the next 500 years and 99% of people can do everything they need with an isp provided /56. IPv4 has survived with 48 bit nat for this long so 64 bit is even more buffer space
Re: IP addresses through 2024
#65One thing I've wondered is how routing will work out in the long term for IPv6.
If I recall correctly, IPv6 routing was supposed to be hierarchical based on ISP and region, and that would help routing tables. But what if companies in the US, for example, buy a /19 and then divide it up and use it across the globe?
I assume routers will have to come with a lot more RAM.
Re: IP addresses through 2024
#66I do want to point out one thing that is a common misconception by IT engineer types: > The use of NATs force the interactions into client-initiated transactions... (abbreviated) There is absolutely ZERO chance that that, let's say Roomba, is going to let you connect directly to your vacuum robot at your home, from your cell, over ipv6, without going through their proxy server in an AWS Datacenter in Virgina. The nat…
You've picked a particularly poor example. You can directly connect to the MQTT server in your roomba today: https://www.home-assistant.io/integrations/roomba/
Re: IP addresses through 2024
#67I do want to point out one thing that is a common misconception by IT engineer types: > The use of NATs force the interactions into client-initiated transactions... (abbreviated) There is absolutely ZERO chance that that, let's say Roomba, is going to let you connect directly to your vacuum robot at your home, from your cell, over ipv6, without going through their proxy server in an AWS Datacenter in Virgina. The nat…
You've picked a particularly poor example. You can directly connect to the MQTT server in your roomba today: https://www.home-assistant.io/integrations/roomba/
Indeed I did, that's hilarious
Re: IP addresses through 2024
#68Earlier quoted context omitted.
Except that IPv6 is actually not that large. You effectively can't use networks that are smaller than /64, because stateless autoconfiguration can't use any other prefix size (there's an effort to fix it, but it'll take a decade at best)
That was my whole point. There are not 2^128 ipv6 addresses for Individual use but there are 2^64 /64 networks. If you rent a vps with a ipv6 “address” you will see that you are given a /64 network. There is no effort to “fix” the bottom 64 bits because it’s not needed. There are enough /56 networks to for the next 500 years and 99% of people can do everything they need with an isp provided /56. IPv4 has survived wit…
> If you rent a vps with a ipv6 “address” you will see that you are given a /64 network.
Unfortunately, I've seen multiple VPS providers that will assign you a single address within a /120 or something ridiculous like that.
I presume whoever runs the network side of things with those VPS providers has never used IPv6 themselves or they must be _extremely_ stingy.
Re: IP addresses through 2024
#69Earlier quoted context omitted.
You can absolutely use them, you just need static or DHCP addressing just like the old days. But thanks SLAAC for forcing my ISP to give me /64 or bigger so I can always subnet into /96 for example.
How many devices actually support DHCPv6? SLAAC is pretty much the standard way of assigning addresses these days.
Just about anything with a screen these days. The biggest holdout is Android and a bunch of IoT stuff.
SLAAC works on any device that supports DHCPv6, though, so you might as well use it if you don't have any requirements to favour DHCPv6
Re: IP addresses through 2024
#70Earlier quoted context omitted.
People get caught up in how many IPv6 addresses exist, as if we will always have enough to go around. Recently Capital One was assigned a /16, enough for every ATM in the US to be its own ISP and make its own customer allocations. We continue to repeat the same mistakes that made people believe we needed v6 in the first place. We will never run out of IPv6, but I believe in my lifetime you won't be able to get new v6…
The IPv6 address space is so huge, I, as an individual, was able to get a /44 no questions asked. Back in the 90's, I was able to get a IPv4 /24, no questions asked.
There are only ~16.7 million /24s in IPv4 whereas there are more than 2000 /44 for every person living on planet earth, it’s really a different scale.