DNS delegation based on both location and organization

[Stephane Bortzmeyer]

On Thu, Sep 08, 2005 at 01:22:15PM +0200,
 Brad Knowles <brad at stop.mail-abuse.org> wrote 
 a message of 136 lines which said:

> 	But keep in mind that you don't want to list too many
> authoritative servers (typically no more than four or five),

You need many more servers to run into problems, even with very long
queries (see http://w6.nic.fr/dnsv6/resp-size.html if you intend to
calculate).

> when you start causing truncation, which results in DNS queries
> having to be re-tried with TCP, etc....

BIND has EDNS0 support for many years, which means it can bypass the
512-bytes limit without resorting to TCP.