3 ms·

> I have yet to meet an infrastructure engineer or even hear of one who switched to IPv6 on purpose because they thought it was better. Go talk to the infra pe

> I have yet to meet an infrastructure engineer or even hear of one who switched to IPv6 on purpose because they thought it was better. Go talk to the infra people at Comcast. Their infra network is 100% IPv6 and their customers are almost exclusively fixed-location. > ...I don't see the point of it. I've personally seen (on more than one occasion) the IT infra mergers of pairs of companies delayed by 12+ months because of the need to renumber (and/or decom because there's just not enough IP address space) machines using RFC 1918 space. RFC 4193 eliminates the need for renumbering. There are many other reasons for it, but that's one of the ones that tears my heart to pieces each time I have to use multiple VPNs for a year or more while the Great Renumbering is underway.

djha-skin 3y ago
> Go talk to the infra people at Comcast. There are mobile providers so your argument is invalid. Also on the server side they are a famous case of people who need more than 65,000 servers which I covered in my comment. And renumbering is so, so much easier than switching network stacks. It'd be years to switch network stacks, not only to change over the addresses but also to change over entire business processes and higher swaths of security engineers to keep track of your now much more vulnerable network. It would be a business change, not just a network change.
- lxgr 3y ago
  What? Comcast is primarily a fixed/wired network provider.
  - djha-skin 3y ago
    Still a case of over 65,000 servers. But yes they also still do run a mobile network.
    - lxgr 3y ago
      What servers? They're a cable ISP. I'm sure they also have some business users, many of which will be hosting servers, but that's not really the first thing I think of when I hear "Comcast has deployed IPv6". I'm thinking people connecting iPads and lightbulbs to some CPE, not data centers. And Comcast does that via IPv6, as do many cable or fiber ISPs these days. Many don't assign public IPv4 addresses to their residential customers anymore.
      - simoncion 3y ago
        > I'm thinking people connecting iPads and lightbulbs to some CPE, not data centers. It's that, sure. But it's also Comcast's internal infrastructure devices. Comcast went all-IPv6 on their internal network because they have so very many things that they need to directly address... _internally_... that IPv4 wasn't cutting it anymore. Even if they didn't provide IPv6 service to their end-users, they'd still be using IPv6 on their internal network.

djha-skin 3y ago

> Go talk to the infra people at Comcast. There are mobile providers so your argument is invalid. Also on the server side they are a famous case of people who need more than 65,000 servers which I covered in my comment. And renumbering is so, so much easier than switching network stacks. It'd be years to switch network stacks, not only to change over the addresses but also to change over entire business processes and higher swaths of security engineers to keep track of your now much more vulnerable network. It would be a business change, not just a network change.

lxgr 3y ago
What? Comcast is primarily a fixed/wired network provider.
- djha-skin 3y ago
  Still a case of over 65,000 servers. But yes they also still do run a mobile network.
  - lxgr 3y ago
    What servers? They're a cable ISP. I'm sure they also have some business users, many of which will be hosting servers, but that's not really the first thing I think of when I hear "Comcast has deployed IPv6". I'm thinking people connecting iPads and lightbulbs to some CPE, not data centers. And Comcast does that via IPv6, as do many cable or fiber ISPs these days. Many don't assign public IPv4 addresses to their residential customers anymore.
    - simoncion 3y ago
      > I'm thinking people connecting iPads and lightbulbs to some CPE, not data centers. It's that, sure. But it's also Comcast's internal infrastructure devices. Comcast went all-IPv6 on their internal network because they have so very many things that they need to directly address... _internally_... that IPv4 wasn't cutting it anymore. Even if they didn't provide IPv6 service to their end-users, they'd still be using IPv6 on their internal network.