BIND 8.2.2_P5 gives up
Mark.Andrews at nominum.com
Mark.Andrews at nominum.com
Tue Sep 26 21:47:06 UTC 2000
BIND 4 & 8 do not have query restart. They depend on the client
requerying which is required behaviour for UDP clients.
As for why named rejects the A records. This is anti-cache
poisoning at work.
Mark
>
> (For those of you that missed the first installment, I've got a BIND
> 8.2.2_P5 that's performing about half of a lookup for a client, and then
> just stops. See the packet trace below for more detail.)
>
> Okay. Here it all is again, with a new query:
>
> 1 0.00000 client -> server DNS C www.acmebw.com. Internet Addr ?
> 2 0.01793 server -> a.gtld DNS C www.acmebw.com. Internet Addr ?
> 3 0.03831 a.gtld -> server DNS R
> 4 0.06703 server -> j.gtld DNS C NS1.VIENNA.ACMEBW.NET. Internet Addr ?
> 5 0.08790 server -> j.gtld DNS C NS1.SANJOSE.ACMEBW.NET. Internet Addr ?
> 6 2.06669 j.gtld -> server DNS R NS1.VIENNA.ACMEBW.NET. Internet Addr 198.
> 41.3.72
> 7 2.07422 j.gtld -> server DNS R NS1.SANJOSE.ACMEBW.NET. Internet Addr 208
> .206.240.74
> 8 4.99171 client -> server DNS C www.acmebw.com.windwire.com. Internet Add
> r ?
> 9 4.99361 server -> client DNS R Error: 3(Name Error)
> 10 15.98684 client -> server DNS C www.acmebw.com. Internet Addr ?
> 11 15.99119 server -> vienna DNS C www.acmebw.com. Internet Addr ?
12 16.01393 vienna -> server DNS R www.acmebw.com. Internet CNAME acmebw.com.
> 13 16.02479 server -> client DNS R www.acmebw.com. Internet CNAME acmebw.com
> .
>
> The reason that it's requesting the nameservers it has already recieved
> in additional data is:
>
> rrextract: dname NS1.VIENNA.ACMEBW.NET type 1 class 1 ttl 172800
> ignoring additional info 'NS1.VIENNA.ACMEBW.NET' type A
> rrextract: dname NS1.SANJOSE.ACMEBW.NET type 1 class 1 ttl 172800
> ignoring additional info 'NS1.SANJOSE.ACMEBW.NET' type A
>
> That's from the BIND debug output. The rest of the debug output seems
> to lend no additional information. It only seems to show the same thing
> that the packet snoop does, which is that it gets the appropriate name
> servers and then fails to respond to the original request.
>
> BTW, the final CNAME responses contain the appropriate A record.
>
> Again, thanks for any help you might be able to lend.
>
> -Bitt
>
>
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at nominum.com
More information about the bind-users
mailing list