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Thread: IPv6 readiness

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  1. #1
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    Question IPv6 readiness

    Hello.

    I've heard about the exhaustion of IPv4 addresses, and I roughly know what IPv6 is.

    Does anyone know how to check whether our hardware (network adapters, routers, etc.), and software (operating systems, browsers, etc.) are ready for the transition?

    Thanks in advance.
    Last edited by JFekete9076; February 10th, 2011 at 04:44 PM.

  2. #2
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    Re: IPv6 readiness

    Quote Originally Posted by JFekete9076 View Post
    Hello.

    I've heard about the exhaustion of IPv4 addresses, and I roughly know what IPv6 is.

    Does anyone know how to check whether our hardware (network adapters, routers, etc.), and software (operating systems, browsers, etc.) are ready for the transition?

    Thanks in advance.
    First, make sure that your ISP provides you with v6 connectivity, then go to http://ipv6-test.com and do the connection test.

    If it shows your v6 address and related infos, then you're onboard.

    You may also have to enable it on your router if it doesn't work.

  3. #3
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    Re: IPv6 readiness

    My whole network runs dual stack with an IPv6 tunnel from Hurricane Electric.

    Most (all?) operating systems these days have IPv6 functionality including Linux, Windows xp and newer, and Mac os X. Heck, even apple iOS4 and above is IPv6 functional even though they don't advertise the IPv6 address anywhere in the settings.

    most low level hardware like switches and nics and such will also handle IPv6 with no issue.

    Routers are the problem, most don't. I know apple Airport Extremes do, as well as anything running DD-WRT or tomato. Personally I just use an old computer running linux to handle my IPv6 routing.

  4. #4
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    Post Re: IPv6 readiness

    Which routers are IPv6-ready?
    I am using TP-Link WR340GD, which was bought in 2010.

  5. #5
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    Re: IPv6 readiness

    The transition from v4 to v6 is a lot like the transition from analog to digital TV; new gear all around to mostly get the same content. The odds are high that your existing broadband modem and wifi router don't actually support v6 properly and will have to be replaced in 2012 or 2013. Waiting is a good consumer move, as quantity, quality, and prices of v6-capable gear will be improving rapidly in the next 6-18 months.

    Finding out if your current gear supports v6 takes some doing; look up the exact model on-line and see if it's mentioned as a supported feature. If not, be pessimistic. If you have access to administrative interfaces, see if they have any v6 features visible; if not, be pessimistic. It's a fair amount of work to actually test for v6 if your ISP doesn't support it already, so that's probably not worth the effort. If you can reflash a device with 3rd party firmware, and it has enough memory of the various types (flash, ram), a lot of the linux router firmwares such as dd-wrt have v6 support.

    On the OS front I recommend being on recent software, so serious v6 folks want windows 7, this summer's Mac OS-X 10.7 "lion", Redhat 6, etc. v6 support in recent versions of Ubuntu is pretty good. All modern browsers support "dual-stack" operation of v4 or v6 in parallel, so you are OK there, too.

    ISPs and hosting providers need to support v6 ASAP, as their business customers will be demanding it. Businesses may or may not need to rush; if they have asian customers, asian supply chains, mobile customers, or government contracts they need to hurry on v6 support, at least for their outward facing services. Note that in the US smartphones are outselling computers, and 4G smartphone rollouts are all dual-stack-lite, with native v6 only; their v4 support is legacy v4 over v6 tunnels to carrier NAT44 translators. Which is why the likes of google, youtube, facebook, netflix and cnn are already dual-stacked. Enthusiasts don't have to wait for their ISP's to offer native or near-native (6rd) v6; they can set up IPv6 over v4 tunnels, e.g. with hurricane electric's "tunnelbroker.net", sixxs, or gogo6. The one gotcha there is that your wifi router has to pass protocol 41 (IP over IP) too, not just protocols 1,6,17 (ICMP, TCP, UDP). I recommend point to point tunnels rather than 6to4 (not available to most home users behind NAT devices) or Teredo (only for masochists).

    The likely timetable is: RIR's run out of most v4 in 2011, ISP's run out in 2012, the year of the IPocalypse is 2013 - when new v4 is hard to get but v6 availability is still problematic. Widespread world-wide availability of v6 is probably 2015. 99% v6 traffic is probably 2017. Tier-1 ISP's turning off v4 routing on the global internet backbone is probably 2020. The last v4 device lingers till, say, 2036.

  6. #6
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    Smile Re: IPv6 readiness

    Thank you for the answer.

  7. #7
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    Re: IPv6 readiness

    Quote Originally Posted by lemming465 View Post
    I recommend point to point tunnels rather than 6to4 (not available to most home users behind NAT devices) or Teredo (only for masochists).
    And is Miredo the Linux equivalent of Teredo?
    The Teredo IPv6 tunneling protocol encapsulates IPv6 packets into UDP/IPv4
    datagrams, to allow hosts behind NAT devices to access the IPv6 Internet.

    Miredo is a Teredo client (as per RFC 4380): it can provide IPv6
    connectivity to a dual-stack IPv6/IPv4 host even if it is located behind a
    NAT. It can also operate as a Teredo relay which forwards IPv6 packets
    between the IPv6 Internet and remote Teredo clients.
    I've just stated looking into this and am not sure how this works and was wondering about your thoughts.

  8. #8
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    Re: IPv6 readiness

    Quote Originally Posted by lemming465 View Post
    Finding out if your current gear supports v6 takes some doing; look up the exact model on-line and see if it's mentioned as a supported feature.
    Can you suggest me a website for this?
    I've been experiencing that it may be difficult to look for the specifications of a device.
    Last edited by JFekete9076; February 15th, 2011 at 06:09 PM.

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