<div dir="ltr">On Mon, Jul 17, 2017 at 6:40 PM, Paul McNary <span dir="ltr"><<a href="mailto:pmcnary@cameron.net" target="_blank">pmcnary@cameron.net</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>I would prefer to give my residential users a /48 for the future
but a /56<br></p></div></blockquote><div>Hi Paul,</div><div><br></div><div>This is acceptable under current ARIN policy and would remain so under variant of the policy currently under discussion.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div text="#000000" bgcolor="#FFFFFF"><p></p><p>
could work, just a pain. Again rDNS could be a problem.<br>
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<p>Do AS's use ARIN reverse DNS for size smaller than /48?<br>
If rDNS will not work worldwide except with /48 advertising,</p></div></blockquote><div>RDNS for IPv6 works best with allocations on nibble boundaries. /48, /52, /56, /60, /64, etc. It's only fractionally more work on non-nibble boundaries but not nearly as clean. Clean solutions are desirable.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div text="#000000" bgcolor="#FFFFFF"><p>
I think that should be the SWIP boundary.<br>
I know for a while some AS's required /32.<br></p></div></blockquote><div>You may be confusing RDNS with BGP. For a while, a few Internet backbones refused to accept and route BGP prefixes longer than (less than) a /32. The last holdout gave up a couple years ago; standard practice is now /48. It's unlikely to change to anything longer than a /48, ever.</div><div><br></div><div>IPv6 RDNS has always worked at any CIDR level and continues to work most cleanly at any nibble boundary.</div><div> </div><div>Regards,</div><div>Bill Herrin</div></div><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">William Herrin ................ <a href="mailto:herrin@dirtside.com" target="_blank">herrin@dirtside.com</a> <a href="mailto:bill@herrin.us" target="_blank">bill@herrin.us</a><br>Dirtside Systems ......... Web: <<a href="http://www.dirtside.com/" target="_blank">http://www.dirtside.com/</a>></div>
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