On Tue, 2007-07-17 at 13:08 +0200, Heiko Wundram (Beenic) wrote: > On Tuesday 17 July 2007 12:47:50 Volker wrote: > > I've googled a bit. RFC 2870 says: > > > > 2.7 Root servers SHOULD NOT answer AXFR, or other zone transfer, > > queries from clients other than other root servers. This > > restriction is intended to, among other things, prevent > > unnecessary load on the root servers as advice has been heard > > such as "To avoid having a corruptible cache, make your server a > > stealth secondary for the root zone." The root servers MAY put > > the root zone up for ftp or other access on one or more less > > critical servers. > > Read up on: > > http://www.ietf.org/rfc/rfc2119.txt > > which specifically says that "should not" means "recommended not to", but not > explicitly forbidden. So, this behaviour is not in violation of RFC2870, just > discouraged by it. If the (respective) roots offer it, perfect. >
Relying on a "SHOULD NOT" being ignored is a Bad Thing.
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