Suboptimal behavior from nsd

Ted Lindgreen ted at NLnetLabs.nl
Mon Jan 12 15:28:11 UTC 2004


[Quoting Alexis Yushin, on Jan 12, 16:10, in "Re: Suboptimal behav ..."]
> Once Ted Lindgreen wrote:
> >[Quoting Stephane Bortzmeyer, on Jan 12, 14:55, in "Re: Suboptimal behav ..."]
> >> On Thu, Jan 08, 2004 at 02:36:51PM +0100,
> >>  Ted Lindgreen <ted at tednet.nl> wrote 
> >>  a message of 49 lines which said:
> >> 
> >> > An authoritative-only server should only produce the necessary
> >> > glue:  info about in-zone nameservers, and no other Additional
> >> > data. 
> >> 
> >> So, BIND is wrong?
> >
> >No, BIND is (per default) not an "authoritative-only server".
> >
> >BIND is (also) a caching forwarder, and caching forwarders can/may
> >give back any RRsets it has properly looked up and successfully
> >cached earlier, when it believes such RRsets may to be relevant to
> >the requestor (like an A RR to which a CNAME or an MX points).
> 
> As long as AA flag is not set on the answer.

No, that is not true:

  The AA flag reflects the status of the info in the "ANSWER SECTION",
  and says nothing about status of the info in the "ADDITIONAL SECTION".

-- ted



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