<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 17/07/2008, at 2:47 PM, Noel Butler wrote:</div><blockquote type="cite"><div><font class="Apple-style-span" color="#000000"><br></font></div><div>The biggest problem we have is address space horders</div></blockquote><br></div><div>I'm not entirely sure that APNIC agrees with that assessment.</div><div><br></div><div>And even if they did, how would you propose to deal with it in a way</div><div>that pushed the practical effects of exhaustion out to the end of the</div><div>next decade?</div><div><br></div><div>Regardless: In my experience, performing an IPv6 implementation on </div><div>an IPv4 network that isn't currently carrying it isn't any harder than </div><div>performing an MPLS implementation on any IPv4 network that isn't</div><div>carrying MPLS.</div><div><br></div><div>Are there wrinkles, bugs, annoyances and incomprehensible </div><div>failures? Sure. But I think most of us are paid to turn features with</div><div>wrinkles, bugs, annoyances and incomprehensible failures into </div><div>saleable products, and ought to be able to take it in our stride.</div><div><br></div><div>The issue with IPv6 isn't so much the network (that bit's relatively</div><div>easy), but with the back-end systems. Billing, provisioning, address</div><div>allocation, security, DNS, load-balancing, etc. The actual nuts and</div><div>bolts of trucking IPv6 packets around the network are pretty</div><div>straightforward, but the software support and training issues are</div><div>something akin to the magnitude of problem all the finance and</div><div>manufacturing industries had with their COBOL code in the run-up</div><div>to y2k. Except in their case, a bit of auditing revealed that almost</div><div>all of their systems coped with 4-digit dates, whereas even trivial</div><div>examination reveals that almost NONE of this industry's systems</div><div>deal seamlessly with 128-bit IP prefixes.</div><div><br></div><div><br></div><div> - mark</div><div><br></div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><font class="Apple-style-span" face="'Andale Mono'" size="1"><span class="Apple-style-span" style="font-size: 9px; "><br class="Apple-interchange-newline">--</span></font></div><div><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="'Andale Mono'"><font class="Apple-style-span" size="1"><span class="Apple-style-span" style="font-size: 9px; ">Mark Newton Email: <a href="mailto:newton@internode.com.au">newton@internode.com.au</a> (W)</span></font></font></font></div><div><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="'Andale Mono'"><font class="Apple-style-span" size="1"><span class="Apple-style-span" style="font-size: 9px; ">Network Engineer Email: <a href="mailto:newton@atdot.dotat.org">newton@atdot.dotat.org</a> (H)</span></font></font></font></div><div><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="'Andale Mono'"><font class="Apple-style-span" size="1"><span class="Apple-style-span" style="font-size: 9px; ">Internode Systems Pty Ltd Desk: +61-8-82282999</span></font></font></font></div><div><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="'Andale Mono'"><font class="Apple-style-span" size="1"><span class="Apple-style-span" style="font-size: 9px; ">"Network Man" - Anagram of "Mark Newton" Mobile: +61-416-202-223</span></font></font></font></div><div><font class="Apple-style-span" color="#000000"><font class="Apple-style-span" face="'Andale Mono'"><font class="Apple-style-span" size="1"><span class="Apple-style-span" style="font-size: 9px; "><br class="webkit-block-placeholder"></span></font></font></font></div></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline"> </div><br></body></html>