Do root servers change ?

[Mark Andrews]

> In article <de3be0$l3m$1 at sf1.isc.org>,
>  Mark Andrews <Mark_Andrews at isc.org> wrote:
> 
> > > I have a caching DNS server running on a remote server.
> > > 
> > > What should be routing maintenance activity ?
> > > 
> > > Do root servers change ?
> > 
> > 	Yes.  They have changed both names and addresses in the
> > 	past.
> 
> While they do change, it's relatively safe to ignore this.  One of the 
> things that named does when it starts up is query one of the servers in 
> the root hints to get the current set of root servers.  So unless the 
> addresses have changed so much that none of the servers in the hints are 
> available, named will always be up to date.  The only other concern 
> would be if one of the old root server addresses were reassigned to 
> someone running a fake root server; hopefully, the powers that be of the 
> Internet would be careful not to reassign address blocks that have been 
> used by root operators.

	One should periodically update your idea of the root servers.
	This way you stop attempting to prime off a old address.

	Mark

--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org