<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Apr 29, 2016 at 3:55 PM, Andrew Sullivan <span dir="ltr"><<a href="mailto:ajs@anvilwalrusden.com" target="_blank">ajs@anvilwalrusden.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">I'm not sure I buy this account. It was not designed to define<br>
equivalence, it's true, but I think it might have been intended to do<br>
more than alias host records (which in any case are less self-evident<br>
than they might be, since A doesn't have the same semantics in every<br>
class). Mostly, they remind me of symlinks in the UNIX filesystem,<br>
which have the same kind of problem: you can get to the target but<br>
you don't know what is pointing at any given target.<br>
<span class=""><br></span></blockquote><div><br></div><div>You're right. I did a quick review to see where I had gotten that impression from, and it seems my memory is guilty of selectively reinterpreting RFC 1034. (favorite hobby of DNS nerds everywhere) Specifically, the first few paragraphs of §3.6.2.</div><div><br></div><div>Mea culpa. Hopefully the rest was less of a reach.</div></div></div></div>