[dns-operations] Comments regarding RFC 3484

Florian Weimer fw at deneb.enyo.de
Fri Sep 7 11:29:07 UTC 2007

* Edward Lewis:

> At 11:12 +0200 9/7/07, Florian Weimer wrote:
>>Despite it's title ("Default Address Selection for Internet Protocol
>>version 6 (IPv6)"), it basically alters the behavior of stub resolvers
>>for A records (Rule 9 in Section 6).
> In what way (does it alter the behavior)?

If you've got two instances of a service, one in 81/8 and one in
213/8.  For clients in 0/1, the 81/8 service instance will be
preferred over the other one.

The traditional UNIX resolver will forward whatever the cache returns,
and many (most?) caches apply a certain amount of randomness to the
address list they return, so that there's some load balancing.

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