Ambiguous def of multiple CNAME

[Mark_Andrews at iengines.com]

	Upgrade.
	You are seeing the effects of the bug fixed with this change.

 733.   [bug]           RD is not being set on first message to first forwarder
			resulting in false "Lame Server" reports and degraded
			service.

	Mark
> 
> >Strange, but this works fine for me. I defined "blah.chrysler.com" in a bogu
> s >version of the chrysler.com zone, as an alias to www.sun.com. When I queri
> ed >it, it translated the CNAME, then used the forwarder to fetch the A recor
> d. >This is just using a generic global-forward-and-master-for-chrysler.com t
> ype of >configuration. Is yours different somehow?
> 
> My config is plain-jane forward-if-you-dont-know-it.  My internal server is a
> uth for, say, foo.com.  The rest of this is real.
> 
> porttracker.foo.com.    IN      CNAME   porttracker.finsys.com.
> 
> Here's the debug of me nslookup porttracker.foo.com RIGHT ON THE INTERNAL NAM
> ESERVER:
> 
> 
> req: nlookup(porttracker.foo.com) id 13204 type=1 class=1
> req: found 'porttracker.foo.com' as 'porttracker.foo.com' (cname=0)
> req: nlookup(porttracker.finsys.com) id 13204 type=1 class=1
> req: found 'porttracker.finsys.com' as 'finsys.com' (cname=1)
> evSetTimer(ctx 0x15f590, func 0x39ed4, uap 0, due 943984296.000000000, inter 
> 0.0
> 00000000)
> forw: forw -> [1.2.3.4].53 ds=4 nsid=3597 id=8238 5ms retry 8sec
> .
> .
> .
> Response (USER NORMAL -) nsid=3597 id=13204
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3597
> ;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
> ;;      porttracker.finsys.com, type = A, class = IN
> FINSYS.com.             21h53m32s IN NS  NS1.FINSYS.com.
> FINSYS.com.             21h53m32s IN NS  NS.FINSYS.com.
> NS1.FINSYS.com.         23h36m45s IN A  208.133.246.226
> NS.FINSYS.com.          23h36m45s IN A  208.133.246.228
> resend(addr=1 n=0) -> [208.133.246.226].53 ds=4 nsid=3597 id=13204 21ms
> 
> 
> 
> So you see how now I try to contact 208.133.246.226 to get the A RR, and then
>  times out.  What's interesting is the line
> ;;      porttracker.finsys.com, type = A, class = IN
> 
> Why do I have an A RR returned to me, but no IP??
> 
> CT
> 
> 
--
Mark Andrews, Internet Engines Inc. / Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at iengines.com