[as112-ops] [IANA #516549] Blackhole servers

[William F. Maton Sotomayor]

So as Joe very well deomonstrated, from where you are getting those 
traces, we need to know exactly which AS112 server is the one your network 
is prefering.  What does the output of:

 	dig @prisoner.iana.org hostname.as112.net txt +short

Give you as a result from where you are getting hte traces?

On Thu, 22 Dec 2011, mohammed.el-shakweer at bell.ca wrote:

> Hello Anand;
>
> Thanks for your response, below is a trace we were seeing, the first blackhole server not responding, and then the 2nd one responding as below;
>
> No.     Time        Source                Destination           Protocol Length Info
>   2186 10.757689   10.130.72.21          10.130.201.18         DNS      96     Standard query PTR 210.4.20.172.in-addr.arpa
>   2188 10.758043   10.130.201.18         192.175.48.6          DNS      96     Standard query PTR 210.4.20.172.in-addr.arpa    >>>>>>>>>>>>>blackhole-1.iana.org>>>>no response
>   2454 12.793212   10.130.72.21          10.130.201.18         DNS      96     Standard query PTR 210.4.20.172.in-addr.arpa
>   2831 14.793076   10.130.72.21          10.130.201.18         DNS      96     Standard query PTR 210.4.20.172.in-addr.arpa
>   3569 16.793252   10.130.72.21          10.130.201.18         DNS      85     Standard query PTR 210.4.20.172.in-addr.arpa
>   4314 19.993019   10.130.72.21          10.130.201.18         DNS      85     Standard query PTR 210.4.20.172.in-addr.arpa
>   4414 20.758160   10.130.201.18         192.175.48.42         DNS      96     Standard query PTR 210.4.20.172.in-addr.arpa
>   4430 20.812626   192.175.48.42         10.130.201.18         DNS      173    Standard query response, No such name arpa    >>>>>>>>>>>>>blackhole-2.iana.org>>>> response
>
>
>
>
> Best Regards
>
>
> Mohammed El-Shakweer
> Network Specialist
> Data Network Services & Support (DNSS)
> Bell Canada
> 200 Bouchard Blvd., 6CS
> Dorval, Québec, Canada
> Tel: (514) 828-9384
> mohammed.el-shakweer at bell.ca
> www.bell.ca
>  
> Confidentiality warning
>
> -----Original Message-----
> From: Anand Buddhdev [mailto:anandb at ripe.net]
> Sent: December-22-11 6:59 AM
> To: El-Shakweer, Mohammed (6038808)
> Cc: iana-questions at iana.org; as112-ops at lists.dns-oarc.net
> Subject: Re: [as112-ops] [IANA #516549] Blackhole servers
>
> On 21/12/2011 23:09, mohammed.el-shakweer at bell.ca wrote:
>
>> Hello AS112-ops;
>>
>> Regarding the blackhole servers, were there any issues in the past
>> 10 days with these servers, as we were having problems getting responses
>> for 172.16.0.0 - 172.31.255.255 private addressing space, sometimes no
>> response or slow response. We realize that we should use an internal
>> blackhole or configure the reverse zones for private addressing internal
>> to avoid slow response from blackhole servers on the internet, which we
>> plan to do soon, but if you can shed some light if there were any issues
>> in the past 10 days that would be highly appreciated.
>
> I believe ISC was testing BIND 10 on their AS112 instance. If you
> happened to see prefixes from them, then you may have had trouble
> getting responses for your queries.
>
> Regards,
>
> Anand Buddhdev
> RIPE NCC
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>

wfms