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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">From
<a href="http://en.wikipedia.org/wiki/IPv6_address">http://en.wikipedia.org/wiki/IPv6_address</a> - think we will be ok
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D;mso-fareast-language:EN-US">J</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<span style="font-size:14.5pt;font-family:"Arial","sans-serif";color:black">IPv6 address space<o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">[<a href="http://en.wikipedia.org/w/index.php?title=IPv6_address&action=edit§ion=13" title="Edit section: General allocation"><span style="color:#0B0080">edit</span></a>]</span><b><span style="font-size:13.0pt;font-family:"Arial","sans-serif";color:black">General
allocation<o:p></o:p></span></b></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">The management of IPv6 address allocation process is delegated to the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Internet_Assigned_Numbers_Authority" title="Internet Assigned Numbers Authority"><span style="color:#0B0080">Internet
Assigned Numbers Authority</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">(IANA)<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-rfc1881-8"><span style="color:#0B0080">[8]</span></a></sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">by
the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Internet_Architecture_Board" title="Internet Architecture Board"><span style="color:#0B0080">Internet
Architecture Board</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">and the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Internet_Engineering_Steering_Group" title="Internet Engineering Steering Group"><span style="color:#0B0080">Internet
Engineering Steering Group</span></a>. Its main function is the assignment of large address blocks to the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Regional_Internet_Registry" title="Regional Internet Registry"><span style="color:#0B0080">regional
Internet registries</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">(RIRs), which have the delegated task of allocation to network service providers
and other local registries. The IANA has maintained the official list of allocations of the IPv6 address space since December 1995.<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-9"><span style="color:#0B0080">[9]</span></a></sup><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Only one eighth of the total address space is currently allocated for use on the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Internet" title="Internet"><span style="color:#0B0080">Internet</span></a>,</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">2000::/3</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">,
in order to provide efficient</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Route_aggregation" title="Route aggregation"><span style="color:#0B0080">route
aggregation</span></a>, thereby reducing the size of the Internet routing tables; the rest of the IPv6 address space is reserved for future use or for special purposes. The address space is assigned to the RIRs in large blocks of</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/23</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">up
to</span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/12</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">.<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-10"><span style="color:#0B0080">[10]</span></a></sup><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">The RIRs assign smaller blocks to</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Local_Internet_registry" title="Local Internet registry"><span style="color:#0B0080">local
Internet registries</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">that distributes them to users. These are typically in sizes from</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/19</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">to</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/32</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">.<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-11"><span style="color:#0B0080">[11]</span></a><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-12"><span style="color:#0B0080">[12]</span></a><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-13"><span style="color:#0B0080">[13]</span></a></sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">The
addresses are typically distributed in</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/48</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">to</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/56</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">sized
blocks to the end users.<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-rfc6177-14"><span style="color:#0B0080">[14]</span></a></sup><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Global unicast assignment records can be found at the various RIRs or other websites.<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-15"><span style="color:#0B0080">[15]</span></a></sup><o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">IPv6 addresses are assigned to organizations in much larger blocks as compared to IPv4 address assignments—the recommended allocation is a</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/48</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">block
which contains 2<sup>80</sup>addresses, being 2<sup>48</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">or about</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">2.8×10<sup>14</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">times
larger than the entire IPv4 address space of 2<sup>32</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">addresses and about</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">7.2×10<sup>16</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">times
larger than the</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/8</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">blocks
of IPv4 addresses, which are the largest allocations of IPv4 addresses. The total pool, however, is sufficient for the foreseeable future, because there are 2<sup>128</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">or
about</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">3.4×10<sup>38</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">(340</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/10%5E12" title="10^12"><span style="color:#0B0080">trillion</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">trillion
trillion) unique IPv6 addresses.<o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Each RIR can divide each of its multiple</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/23</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">blocks
into 512</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/32</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">blocks,
typically one for each ISP; an ISP can divide its</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/32</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">block
into</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">65536</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/48</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">blocks,
typically one for each customer;<sup><a href="http://en.wikipedia.org/wiki/IPv6_address#cite_note-16"><span style="color:#0B0080">[16]</span></a></sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">customers
can create</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">65536</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/64</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">networks
from their assigned</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Courier New";color:black">/48</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">block,
each having 2<sup>64</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">addresses. In contrast, the entire IPv4 address space has only 2<sup>32</sup></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">(about4.3×10<sup>9</sup>)
addresses.<o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">By design, only a very small fraction of the address space will actually be used. The large address space ensures that addresses are almost always available, which makes the use of</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/Network_address_translation" title="Network address translation"><span style="color:#0B0080">network
address translation</span></a></span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">(NAT) for the purposes of address conservation completely unnecessary. NAT has
been increasingly used for IPv4 networks to help alleviate</span><span style="font-family:"Arial","sans-serif";color:black"> </span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><a href="http://en.wikipedia.org/wiki/IPv4_address_exhaustion" title="IPv4 address exhaustion"><span style="color:#0B0080">IPv4
address exhaustion</span></a>.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:black">Thank you,<br>
<b> <br>
</b>Michael A Schipp<b><br>
A10 Networks</b></span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> ausnog-bounces@lists.ausnog.net [mailto:ausnog-bounces@lists.ausnog.net]
<b>On Behalf Of </b>Craig Askings<br>
<b>Sent:</b> Monday, 21 January 2013 8:15 PM<br>
<b>To:</b> ausnog@ausnog.net<br>
<b>Subject:</b> Re: [AusNOG] /20 Available<o:p></o:p></span></p>
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<p class="MsoNormal">On 21/01/2013, at 3:45 PM, Jacob Gardiner <<a href="mailto:jacob@jacobgardiner.com">jacob@jacobgardiner.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Might be time for a branch in the email chain for this next comment - but with ipv6, doesn't it seem a little wasteful assigning 18 quntillion IPs to my non-technical mother's ADSL service? Even if she bought 'all of the things' and connected
all of them to <a href="http://myface.com/">myface.com</a>, we're going to be wasting a lot of resources.. Right? <o:p></o:p></p>
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<p class="MsoNormal">Ugh not this straw man argument again. The current allocation policy / best practice is only for <span style="font-size:10.0pt;font-family:"Arial","sans-serif"">2000::/3, if we some how manage to use that all up. IANA can make a new allocation
policy for 4000::/3, 6000::/3, 8000::/3 and so on.</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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