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UK's 'Unallocated' IPv4 Block Actually In Use, Not For Sale

jimboh2k writes "The UK may have 16.9 million 'unused' IPv4 addresses but according to the department that owns them, they're not for sale. The Department of Work and Pensions says it would be too expensive to reallocate those addresses and, even if it did, it would not stave off IPv4 address exhaustion by much." The addresses in question are being used for a new internal government network. Of course, why that project wasn't built using IPv6...

26 of 203 comments (clear)

  1. Let the home office keep them by Anonymous Coward · · Score: 4, Insightful

    Changing the contract will cost them at least 20% more than the current overrun.

    1. Re:Let the home office keep them by bmo · · Score: 3, Interesting

      > and not to be a testbed for new technologies

      But IPV6 is not new technology. The RFC is 14 years old, and current computer operating systems already speak it. An 11 year old operating system, Windows XP, speaks it. http://support.microsoft.com/kb/2478747

      The "install" is merely enabling what is already there.

      > From their point of view, they are good for years to come so why change that.

      But they aren't good for years to come. Once IPV6 comes out regularly, that horde of addresses will be worthless and they will be stuck with obsolete tech. No, wait, it's already obsolete.

      --
      BMO

    2. Re:Let the home office keep them by ifrag · · Score: 5, Funny

      One does not simply "file" a report in the UK.

      ...report to be filed, signed in triplicate, sent in, sent back, queried, lost, found, subjected to public enquiry, lost again, and finally buried in soft peat for three months and recycled as firelighters.

      --
      Fear is the mind killer.
  2. Enlighten me please by zero.kalvin · · Score: 3

    What's so difficult about switching to IPv6 ? I mean where the cost really is ? It is not like I have to buy all of my hardware again, it is mostly a software issue right ?

    1. Re:Enlighten me please by h4rr4r · · Score: 3, Insightful

      You might not, but lots of enterprise hardware would have to be replaced. This stuff has long life times and as the old gear dies off, ipv6 will come with the replacements.

    2. Re:Enlighten me please by PSVMOrnot · · Score: 5, Insightful

      For a home user it is not all that much of an issue, if you are running a remotely recent OS then it is probably already IPv6 capable. At worst you may need to replace your modem/router box, and those who would have trouble with this are likely to be with an ISP that takes care of such matters for them.

      When you are dealing with large scale infrastructure and corporate networks however, things become a little more difficult. At that scale the assumption of running a recent OS doesn't always hold, so you have software updates to worry about which incurs at least a time cost (and time is money). Also the possibly replacing your router becomes replacing racks worth of managed switches, routers, dchp servers and so on. That's not even beginning to take into account all of the legacy software that expects IPv4 and requires it in order to work.

      So, yeah. Simple for home/small business users, but a major project for the IT guys who make things work behind the scenes. Fortunately said tech guys should have been working on getting ready for this for a while already; just like when they made sure that the world didn't fall over at the turn of the millenium.

    3. Re:Enlighten me please by Hatta · · Score: 3, Interesting

      Is there some reason "enterprise" hardware comes with firmware that can't be upgraded?

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    4. Re:Enlighten me please by qwertphobia · · Score: 3, Insightful

      The software on my firewall (which is up-to-date) supports IPv6 in several ways. It can route IPv6 by OSPF. It can firewall and inspect IPv6 traffic. It can provide an IPv6 address to the management interface. It can use IPv6 to download software updates and signatures from the support portal. It can perform NAT6to4 to provide IPv6 connectivity to internal IPv4 resources. However it doesn't yet support Multiprotocol BGP, which is needed to route IPv6 by BGP. This is critical to us since we have multiple ISPs. I give this example because I have found most enterprise equipment "supports" IPv6 but not in a way that enables full replacement of IPv4 addressing with IPv6 addressing. Furthermore, we know how long government projects take to implement. If this one is just completed it probably started a decade ago...

      --
      Never ask for directions from a two-headed tourist! -Big Bird
    5. Re:Enlighten me please by petermgreen · · Score: 4, Insightful

      A few places

      1: routers need to both understand IPv6 AND be able to forward it quickly. If the hardware forwarding engines can't handle the larger v6 addreses then a software update won't help you much.
      2: any application software that needs to communicate over IPv6 needs to use the new v6 capable APIs. Converting software can be a pain either because it requires significant changes to support IPv6* or because the vendor is being a PITA and wants to tie in v6 support to an expensive upgrade you don't want. Or worse a v6 upgrade may simply not be available at all requiring the software to be replaced completely.
      3: while windows XP has some IPv6 support it's not ready for an IPv6 only world.

      *Some examples:
      * There is no direct IPv6 equivilent to WSAAsyncGetHostByName so any app that needs to perform lookups in the background will need to be converted to use threads for name lookups.
      * In windows XP it is not possible for one socket to listen for both IPv4 and IPv6 so apps that previously only listened on a single socket may well need design changes to allow them to listen on multiple sockets.
      * Any app that stores IPv4 addresses in a binary form or a fixed-width text feild will need data format changes

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    6. Re:Enlighten me please by silas_moeckel · · Score: 3, Interesting

      Firmware sure but those asics that make networking kit fast not so much. A lot of the first gen stuff punted ipv6 stuff to the cpu fine if you just want the line item but worthless if you want to actually use it for production.

      --
      No sir I dont like it.
    7. Re:Enlighten me please by gstoddart · · Score: 5, Insightful

      What's so difficult about switching to IPv6 ? I mean where the cost really is ? It is not like I have to buy all of my hardware again, it is mostly a software issue right ?

      Because nobody has any real interest in changing to IPv6. Everybody has a working IPv4 infrastructure, and isn't interested in spending money to change over because they have no idea of how that's going to make anything better.

      IPv6 has been coming "real soon now" almost as long as I can remember. And people have mostly been saying "I don't see any good reason" for just as long.

      For large organizations, changing to this is one of those things that nobody can figure out why they'd go through the time and expense.

      I know a lot of people on Slashdot look at IPv6 as some serious awesomeness that everybody should be jumping at. But, really, if you have thousands of machines already running IPv4, that 10.0.0.0 address is just fine for now and there's simply not a compelling reason to start undertaking the transition.

      What's the benefit? What reason would a large corporation find that makes them decide to go through the pain of transitioning? By the time you invest in changing everything over and going through all of the expense and disruption ... in what way would companies be looking at getting an ROI from this?

      I just can't see why people think organizations should be undertaking this, because I don't see the pay off and the business case to be made for it.

      --
      Lost at C:>. Found at C.
    8. Re:Enlighten me please by gstoddart · · Score: 4, Insightful

      If only it were that simple. Hardware is cheap.

      Hardware is cheap if you're talking about a single thing, but the time to do this is pretty expensive.

      I worked on a project last year to upgrade a single enterprise-critical application -- we spent over $250K on hardware, and another million on manpower for the project.

      I've heard that rolling out Win 7 to replace XP is costing several hundred thousand per day in terms of resource costs, but that's quite removed from the source.

      Most organizations would likely spend huge amounts of money transitioning their infrastructure and applications to IPV6, probably with a lot of pain points, and at the end of the day ... what has the money bought you? Is your network faster? Is it more reliable? Are your operating costs lower? Are you more profitable?

      Or have you sunk a bunch of money into something which a bunch of networking geeks think is sexy but nobody else can figure out why they've even bother?

      In the end, it seems like a lot of work and overhead for something which seems to have some very vague short-term benefits ... and "ZOMG, you won't need to do NAT any more as everything in the world can have an IP address" is one of those reasons that usually makes me go "and then what?". People are still going to want to NAT their internal stuff behind a firewall anyway.

      I'd love to hear some compelling reasons for a company to do this. But to date, I haven't heard any. Other than the size of the address space, I don't actually know what problems IPv6 solves. The fact that companies don't seem to be flocking to it tells me I'm not the only one.

      --
      Lost at C:>. Found at C.
    9. Re:Enlighten me please by mwvdlee · · Score: 3, Informative

      Upgrading IPv4-only firmware to handle both IPv4 and IPv6 may require more processing power and memory space than the hardware can provide.

      Obviously the more expensive hardware would be able to cope, but those were more expensive so nobody bought them.

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    10. Re:Enlighten me please by rsclient · · Score: 3, Interesting

      Ick -- WSAAsynGetHostByName? In this day and age, you have a window handle lying around?

      I'm the Program Manager for WinSock at Microsoft. Have you looked at GetAddrInfoEx? In Windows 8/Server 2012, the DNS team added some Async features into it. Even better, it will properly handle IPv6 AND international domain names.

      And if you're doing the new "Runtime" programming for Windows 8, we done our best to make sure that most network programs never have to deal with IP addresses at all -- that means that new new RT apps should be IPv6 ready out of the box.

      (We also do the dual-stack thing with our sockets, so listener sockets just specify a port (or service) to listen on, and we automatically listen to both IPv6 and IPv4. We updates .NET 4.5 in the same way to make dual-stack be simpler.)

      Links: http://msdn.microsoft.com/en-us/library/windows/desktop/ms738518(v=vs.85).asp

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  3. "new internal government network" by Anonymous Coward · · Score: 3, Insightful

    To me that means they should all be 10.x.x.x, and some IT workers are completely and totally incompetent.

    1. Re:"new internal government network" by Anonymous Coward · · Score: 4, Funny

      Government workers are completely and totally incompetent.

      FTFY

    2. Re:"new internal government network" by QuantumRiff · · Score: 3, Informative

      if you have connections to other networks, and/or vpn's, internal network IP's are a pain in the ass. How do you setup a VPN when both ends are using 192.168.1.x? easy, you overload NAT, so both sides see the other as a completely different subnet. Do that about 5 times, and then try to debug some firewall rules.. Many larger companies will now refuse to setup VPN's with companies that use reserved addresses, since its such a pain in the rear.

      By using a valid IP address, your assuring that they are globally unique.

      --

      What are we going to do tonight Brain?
  4. USternet by matt007 · · Score: 3, Informative

    Well some old dinosaur US companies or even universities own a full Class A.... do you think they need the address space more than a government ?

    IBM CSC Dupont MIT Ford Apple USPS... etc.

    see the list at : http://en.wikipedia.org/wiki/List_of_assigned_/8_IPv4_address_blocks

  5. They should sell it anyway by DrXym · · Score: 4, Insightful

    Sell the block for a billion or whatever it's worth, and use the money to build an IPv6 backbone for UK government services. That in turn would free up more blocks which they could continue to sell and continue to fund the transition with. Or they could sit on them and do nothing until the world switches to IPv6 and there is a glut of IPv4 addresses that nobody is interested in buying.

    1. Re:They should sell it anyway by gramty · · Score: 3, Informative

      They can't sell them, they don't own them. the RIR (RIPE NCC) has very strict rules over the transfer of IPv4 addresses. If the currently end user no longer requires them they should are to be returned to RIPE for zero compensation, RIPE can then re-assign based on applications requirements and justification. The rules were brought in to prevent people setting up shell companies to land grab all the remaining address space once it became obvious it would be exhausted.

  6. Re:Because sixxs is a pain in the ass to get by petermgreen · · Score: 3, Informative

    If you want a free v6 tunnel there are less elitist providers than sixxs. gogo6 (aka freenet6) even offer unauthenticated tunnels for individual machines* so you can just install their software and go.

    Still I consider such tunnels as a tool for those who are interested in developing/testing IPv6 and maybe as a stopgap measure for a subset of end users who really need to reach v6 servers. If you are serious about v6 then you should be using a v6 capable ISP.

    *If you want a prefix you have to create an account and authenticate to it but afaict creating an account with them is no big deal.

    --
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  7. Re:Doesn't work. by petermgreen · · Score: 4, Insightful

    Unless all systems attached are on the same subnet... And that plays hell with routing, causes congestion... There are reasons the 10.x is non-routed. It was aimed at large local networks - like a node cluster. Sucks when you have to go past a router. That requires routable numbers.

    BS you can route subnets of 10.x on your private networks just fine. You just can't advertise them on the public internet.

    The real problem comes when you are trying to link together a load of sites that are already using some part (or even all, it's a class A block so the default netmask is 255.0.0.0) of 10.0.0.0/8 for their local private network. It is likely that some users will need access to both the national network and existing local private networks. So if you use private IPs for your network you are stuck either trying to find a subset of 10.x that none of the sites are using (can work but there is no gaurantee there will be any such space and it's a problem if you want to add more sites later). Renumbering machines unrelated to your network at various sites so they don't clash with your network or using some horrible NAT hacks.

    --
    note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register
  8. Re:Because sixxs is a pain in the ass to get by higuita · · Score: 3, Informative

    sixxs dont require a linkedin account (or something changed since i created mine and several friends accounts)

    all you need is to say you want to test ipv6 on your home computer (or home network) and put your real info (name, email, etc)... that isnt much different from registering on any website.
    Requiring real info is normal, as you will access the internet with their connections, its normal they want real info to contact you or to redirect any police request if you want to use their network for illegal activities

    --
    Higuita
  9. in the pre-NAT days.... by Larry_Dillon · · Score: 4, Informative

    For those that remember the days before NAT was prevalent, this is what way IP addresses were supposed to be used.

    --
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  10. IPV4 was designed for government use by evilandi · · Score: 5, Insightful

    I think what people have forgotten here is quite how old the internet is, for how long the British have been involved in it, and how tightly integrated into British government it has been for a long, long time.

    I'm sure Slashdotters don't need a history lesson on the origins on the internet; as a cold war military network designed to re-route traffic in the event of a nuclear strike on what would otherwise be single points of failure. What readers might need a reminder on, is the UK aspect of this early history.

    Whilst the internet began as a US-only operation, within only a handful of years this had spread to the US' closest NATO ally, the British. Given that even us Brits cheerfully admit that, from a NATO perspective, our island is essentially a 700-mile long aircraft carrier in the North Atlantic that can never be sunk, the involvement of the UK in the early days of the internet should come as no surprise. It's also well known that both American and British universities got in on the act fairly quickly, initially from the perspective of military research; most British universities were either directly addressable or a short hop through a gateway from the internet by the early 1980s. Other close NATO allies, notably the Canadians, ditto.

    What's not so well understood is that, as absolutely certain first exchange targets, the British had an extremely highly developed government continuity strategy for nuclear war. Some parts of this have come to minor public attention in the form of amusingly retro nuclear bunkers that have been re-purposed as museums, archives or modern telecoms junction points (look up the codenames Guardian, Anchor and Kingsway) with varying degrees of practicality. There are some very chilling bits like the "Protect and Survive" videos (now on Youtube) that frankly still scare me silly and we'd all rather forget. Further, there other parts such as the RSG Regional Seats of Government which remains partially, or perhaps even largely, obscured by national secrecy (and probably rightly so).

    This stuff was set-and-forget, it's original design brief was that you wouldn't be able to call the IT department if the IT department had been killed in the first strike, it had to work and remain working without significant intervention.

    Understand that concept - understand that the internet has been at the heart of the most serious British government infrastructure for around 40 years - and you begin to understand why /8 IPV4 address blocks have been, often literally, hard-wired in to the British government. This network was the network we would rely on, to survive. It was the one thing the British government could depend upon. It was the one thing which, when planning IT infrastructure, the government could be absolutely certain about.

    Having that level of certainty allowed us to build other infrastructure around it, such as the PSN Public Services Network,

    To those arguing that it's just a bunch of router reconfigurations... this is not your piddling little /24 home office network. Nor is it simply a bunch of VPNs linking regional offices over a few leased lines. This is not even one IT-savvy megacorporation like IBM. This is a nuclear-war-proof combined civilian and military network which over 40 years has been integrated into every government department and every local government office in a country of 70 million people. It's in the job centres, the benefits offices, the local tax offices, the post offices, the village doctors' offices. It's throughout public service departments which are staffed by people who, on the whole, are pretty good civil servants but who don't actually have a reason to need to know how it all hangs together, and in the vast majority weren't around when it was plumbed in.

    Would this cost more than the value of the address space to reconfigure to 10.x.x.x or IPV6? Crikey, yes, Ten times yes. Magnitudes of scale yes.

    --
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  11. Re:Because sixxs is a pain in the ass to get by Aighearach · · Score: 3, Informative

    This is slashdot, everybody already knows to use Hurricate Electric.