[dns-operations] Advance notice - H-root address change on December 1, 2015

[Mark Andrews]

In message <55E4FEF7.2050202 at runbox.com>, Ken Peng writes:
> Thanks Dave. they are caching resolvers ,not forwarders.
> We now try to upgrade BIND servers. Thx again.

Well you should upgrade because BIND 9.8.1-P1 is way out of date.
The new address for H won't be added until the addresses offically
change.

> On 2015/9/1  9:13, Dave Warren wrote:
> > On 2015-08-31 17:53, Ken Peng wrote:
> >> Hello,
> >>
> >> Cache only nameservers have no hints file, will they be influenced as
> >> well? I saw the version is:
> >>
> >> ~# named -v
> >> BIND 9.8.1-P1
> >
> > Do you resolve or forward queries? If you forward everything, only the
> > upstream resolver needs to be updated, you have nothing more to worry
> > about.
> >
> > If you're a caching resolver without a forwarder, you need a hints
> > update; if you don't have a hints file on disk then BIND is using a
> > compiled-in default set of root server hints which can be updated by
> > updating BIND.
> >
> > Even if you have an outdated hints file (whether on disk or compiled in)
> > BIND will attempt to update it from the other known root servers upon
> > startup, so while an out of date hints file isn't ideal, it won't cause
> > any major harm. Worst case, BIND will try to update from the outdated
> > H-root IP, timeout, then hit another root and remember that updated
> > hints until BIND is restarted.
> >
> > While it's a good idea to get your hints updated regardless, if you
> > don't have a hints file on disk anywhere then regular routine patching
> > and updates should take care of it, and if you don't even do that, your
> > server will still work.
> >
> > (I have no recollection of which version of BIND first had compiled in
> > hints)
> >
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-- 
Mark Andrews, ISC
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PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org