[Unbound-users] Once TTL has gone, don't fetch again
W.C.A. Wijngaards
wouter at NLnetLabs.nl
Thu Sep 17 14:38:08 UTC 2009
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Hi Koh-ichi Ito,
There is a fix in unbound svn trunk.
It detects that recently it saw other nameserver glue
and attempts to fetch it by querying the parent again.
Best regards,
Wouter
On 09/09/2009 10:58 AM, Koh-ichi Ito wrote:
> Hello again, Wouter
>
> At Mon, 07 Sep 2009 10:57:43 +0200,
> W.C.A. Wijngaards wrote:
>>
>> Yes I could reproduce this.
>>
>> The trouble is this:
>> the TTL for ns1.visualjapan.co.jp and ns2.visualjapan.co.jp
>> is 3600 when visualjapan.co.jp servers are queried, not
>> 86400 like the other IP addresses have - like the lame
>> server has.
>
> Original poster in our forum agrees your description. But he
> also points out that the problem doesn't occur with BIND9.
>
> Though we understand that to fix lame delegation is proper
> way, I guess this is a disadvantage to deploy unbound. Any
> plan to rescue?
>
> For example, if you find that ns-tk022.ocn.ad.jp is lame
> delegated, fetch A's of ns[12].visualjapan.co.jp, and
> continue to work.
>
> Thanks in advance
>
> Koh-ichi Ito
> _______________________________________________
> Unbound-users mailing list
> Unbound-users at unbound.net
> http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users
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