Re: RFC 6604 Clarification

Tony Finch <[email protected]> Wed, 1 Apr 2015 01:17:49 +0100
Newsgroups gmane.ietf.dnsext
Message-ID <[email protected]>
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> On 31 Mar 2015, at 23:38, Brian Dickson <[email protected]> wr=
ote:
>=20
> Sending the query to the previous auth server would be the wrong thing
> to do. Even if such a query were received, the correct behavior is
> NOERRROR, NODATA, with AA unset (set to zero).

If you send a query to an authoritative-only server for a name for which it i=
sn't authoritative, you should get a referral if the qname is a subdomain of=
 one of the server's zones, or a referral to the root (traditional), or REFU=
SED. A referral is a bit more than just NOERROR NODATA AA=3D0 :-)

Tony.
--=20
f.anthony.n.finch  <[email protected]>  http://dotat.at


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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div><br></div><div><div><font color=3D"#00=
0000"><span style=3D"background-color: rgba(255, 255, 255, 0);">On 31 Mar 20=
15, at 23:38, Brian Dickson &lt;<a href=3D"mailto:brian.peter.dickson@gmail.=
com">[email protected]</a>&gt; wrote:<br></span></font></div><bl=
ockquote type=3D"cite"><font color=3D"#000000"><span style=3D"background-col=
or: rgba(255, 255, 255, 0);"><br>Sending the query to the previous auth serv=
er would be the wrong thing<br>to do. Even if such a query were received, th=
e correct behavior is<br>NOERRROR, NODATA, with AA unset (set to zero).</spa=
n></font></blockquote><div><br></div><div>If you send a query to an authorit=
ative-only server for a name for which it isn't authoritative, you should ge=
t a referral if the qname is a subdomain of one of the server's zones, or a r=
eferral to the root (traditional), or REFUSED. A referral is a bit more than=
 just NOERROR NODATA AA=3D0 :-)</div><br>Tony.<div>--&nbsp;</div><div>f.anth=
ony.n.finch &nbsp;&lt;<a href=3D"mailto:[email protected]">[email protected]</a>&gt; &=
nbsp;<a href=3D"http://dotat.at">http://dotat.at</a></div></div><div><br></d=
iv></body></html>=

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