No cache for NS RR in public DNS

[Mark Andrews]

In message <912627.28306.qm at web15706.mail.cnb.yahoo.com>, "Tech W." writes:
> =0A=0A--- On Fri, 15/10/10, Mark Andrews <marka at isc.org> wrote:=0A=0A> From=
> : Mark Andrews <marka at isc.org>=0A> Subject: Re: No cache for NS RR in publi=
> c DNS=0A> To: "Tech W." <techwww at yahoo.com.cn>=0A> Cc: bind-users at isc.org=
> =0A> Received: Friday, 15 October, 2010, 9:21 PM=0A> =0A> In message <81122=
> 2.51900.qm at web15706.mail.cnb.yahoo.com>,=0A> "Tech W." writes:=0A> > Hello,=
> =0A> > =0A> > like this domain:=0A> > =0A> > blogchina.org=0A> > =0A> > I c=
> an't get its NS RR in public DNS:=0A> > =0A> > dig blogchina.org ns @8.8.8.=
> 8=0A> > =0A> > get nothing.=0A> > =0A> > But it does work correctly.=0A> > =
> for example, query the record:=0A> > =0A> > dig udb.yy.blogchina.org=0A> > =
> =0A> > works!=0A> =0A> No. It's just that the lookup of udb.yy.blogchina.or=
> g does=0A> not=0A> depend apon the presence of the blogchina.org ns records=
>  in=0A> the=0A> zone.=A0 The resolver uses the records from the org=0A> zon=
> e.=A0 Only when=0A> you explictly query for them do you notice their absenc=
> e.=0A> =0A=0ASo, is that a bad setup for the zone without a NS record?=0A=
> =0AThanks.=0A=0A=0A      

Firstly please get a mail client that does quoted-printable correctly.
The line break are supposed to be there.  Converting them to "=A0"
is wrong.  You are supposed to be able to read quoted-printable
with a non mime client.  The above is not really readable.  Please
file a bug report with the vendor of your email client.

Secondly, yes it is bad to setup a zone without NS records.  Named
will refuse to load such zones.

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