Comment by ComputerGuru

Comment by ComputerGuru 20 hours ago

20 replies

This seems as good a place to ask as any: how does one obtain a (larger) block of IPv6 not via their ISP/datacenter and then route it (to a network they control) through their ISP/datacenter-provided IPv6 uplink? Is that even possible?

ta1243 19 hours ago

You get yourself an AS and a registration and then talk to your ISPs about how to BGP peer with them.

Read this to start wtih

https://www.arin.net/resources/guide/ipv6/first_request/#end...

  • bauruine 19 hours ago

    You only need an ASN (and at least for RIPE it's a requirement) if you have multiple upstreams.

  • ComputerGuru 19 hours ago

    Thanks. Same process as IPv4, but my question was more focused on the ??? magical last step of getting the ISP to advertise that route.

    • FL410 19 hours ago

      It’s not magical, it’s exactly the same as IPv4, you either peer with them via BGP and advertise it yourself, or you give them an LOA to advertise it on your behalf.

    • bauruine 19 hours ago

      You need to ask your ISP either to announce it with their own ASN or peer with you if you have your own.

    • icehawk 18 hours ago

      Its no more magical than v4. In fact the BGP turn up call I usually have to do does both v4 and v6 at the same time.

    • colechristensen 19 hours ago

      Literally you just talk to your ISP. A support ticket or a technical phone contact. They'll either just do it for you or get you set up to announce your routes to them.

      You'll need an ISP that does actual business networking things, probably. I doubt Xfinity home service would do it for you.

      • londons_explore 19 hours ago

        > You'll need an ISP that does actual business networking things, probably. I doubt Xfinity home service would do it for you.

        It would be nice if someone made a wiki somewhere of which ISP's worldwide will do this on which plans.

        I'd really like to have two ISP's and BGP peer with both, so that if one goes down all my systems keep the same IP address and maintain connectivity.

        The whole idea of everyone having just one connection in a fragile tree-like structure seems against the original design goals of the internet.

joe_bleau 19 hours ago

https://tunnelbroker.net/ will give you a free IPv6 subnet and you can route it over your existing IPv4 link. I think you can get either a /64 or /48.

  • karlshea 19 hours ago

    I had a tunnel with them I was using for a while, but ended up turning it off a couple of months ago.

    Any request to a CDN will be slower since you’re not hitting the cache closest to your actual ISP, and since it’s “a VPN” a lot of things start to break, need more captchas, or get blocked for you since there’s a higher level of abuse from HE’s tunnel broker IP blocks.

  • ComputerGuru 19 hours ago

    Oh wow, I didn’t know they were still around! I used that to get an IPv6 address more than a decade ago; I think they used the bastardized IPv4-mapped-to-v6 address format at the time. But iirc it involved extra network hops because it was tunneled rather than routed, but maybe I’m misremembering.

    I’m guessing they have larger blocks for sale?

    • joe_bleau 19 hours ago

      Sorry to mislead--you're correct, it is a tunnel.