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To: Andreas Schildbach <andreas@schildbach.de>
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Date: Fri, 30 May 2014 16:54:38 +0100
From: Robert McKay <robert@mckay.com>
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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] testnet-seed.bitcoin.petertodd.org is up
	again
Precedence: list

A simple hack would be to crontab up a couple of dig scripts that every 
minute 'dig' (dig's output is in bind zonefile format) the bitcoin-seed 
and write the results to two zonefiles that bind can then serve.

Basically

dig @127.0.0.1 -p 5353 > zonefile1.zone
dig @127.0.0.1 -p 5354 > zonefile2.zone

pkill -HUP named

Ugly, but should work.

Rob

On Fri, 30 May 2014 17:40:06 +0200, Andreas Schildbach wrote:
> I maybe have made this suggestion in the past, but why don't we teach
> the seeder (or maybe even plain bitcoind) how to write a zone file 
> and
> then use matured DNS servers to serve this zone?
>
> I admit I never ran my own DNS so I'm not sure if that can work -- 
> but
> to me it sounds like the easiest approach plus everyone can just use
> stock server software.
>
>
> On 05/30/2014 05:24 PM, Pieter Wuille wrote:
>> I don't think it would be too hard to add support for a option to 
>> the
>> seeder "for non-matching requests, forward to other DNS server at
>> IP:PORT", so you could cascade them.
>>
>> On Fri, May 30, 2014 at 4:51 PM, Robert McKay <robert@mckay.com> 
>> wrote:
>>> No, I don't think so. The problem is the 'aa' flag is missing (see 
>>> the
>>> 'flags' section in dig). Perhaps if you could suppress the 
>>> authority
>>> records the recursor would give up and just accept the 
>>> non-authorative
>>> answer, but that isn't a good solution even if it might work for 
>>> some
>>> resolvers.
>>>
>>> Rob
>>>
>>> On Fri, 30 May 2014 15:13:36 +0100, Alex Kotenko wrote:
>>>> Hmm, you might be right, as queries
>>>> dig @node.alexykot.me [8] testnet-seed.alexykot.me [9]
>>>>
>>>> and
>>>>  dig @node.alexykot.me [10] -p 18353 testnet-seed.alexykot.me
>>>> [11]
>>>>
>>>> are giving different authority sections.
>>>>
>>>> Hmm, but if I setup custom SOA record for it - it should work,
>>>> right?
>>>>  What SOA name should it be actually, assuming that NS record for
>>>> testnet-seed.alexykot.me [12] is pointing at alexykot.me [13]?
>>>>
>>>> Best regards,
>>>>
>>>> Alex Kotenko
>>>>
>>>> 2014-05-30 14:41 GMT+01:00 Robert McKay :
>>>>
>>>>> Hi Alex,
>>>>>
>>>>> I think the problem is with my suggestion to use bind 
>>>>> forwarding..
>>>>> basically bind is stripping off the authorative answer bit in the
>>>>> reply.. this causes the recursor to go into a loop chasing the
>>>>> authority server which again returns a non-authoritve answer with
>>>>> itself as the authority again. Im not sure if this can be fixed
>>>>> without hacking the bind src, so maybe it wasnt such a great
>>>>> suggestion in the first place. Basically I think if bind was
>>>>> returning authorative answers it would work, but I cant see any 
>>>>> way
>>>>> to make that happen in the bind configuration.
>>>>>
>>>>> Rob
>>>>>
>>>>> On Fri, 30 May 2014 14:19:05 +0100, Alex Kotenko wrote:
>>>>>
>>>>>> Hi Peter
>>>>>>
>>>>>> Ive setup DNS seeds myself a week ago, at
>>>>>> testnet-seed.alexykot.me [1] [6]
>>>>>> and bitcoin-seed.alexykot.me [2] [7], but there is a problem 
>>>>>> with
>>>>>> DNS
>>>>>> settings that we with Andreas couldnt sort out quickly.
>>>>>>
>>>>>> The problem itself is that I can reach my nameserver and get
>>>>>> dnsseed
>>>>>> response if I query it directly with
>>>>>>  dig @node.alexykot.me [3] [8] testnet-seed.alexykot.me [4] [9]
>>>>>>
>>>>>>  dig @node.alexykot.me [5] [10] bitcoin-seed.alexykot.me [6]
>>>>>> [11]
>>>>>>
>>>>>> But when I try nslookup testnet-seed.alexykot.me [7] [12] -
>>>>>> it
>>>>>> fails.
>>>>>> I guess the problem is in my DNS settings but I cant figure out
>>>>>> what
>>>>>> is it.
>>>>>>
>>>>>> S o could you share
>>>>>> how you configured DNS
>>>>>>   for your seed
>>>>>> to help me debug
>>>>>>  mine
>>>>>> ?
>>>>>>
>>>>>> Best regards,
>>>>>>
>>>>>> Alex Kotenko
>>>>>>
>>>>>>
>>>>
>>>>
>>>> Links:
>>>> ------
>>>> [1] http://testnet-seed.alexykot.me
>>>> [2] http://bitcoin-seed.alexykot.me
>>>> [3] http://node.alexykot.me
>>>> [4] http://testnet-seed.alexykot.me
>>>> [5] http://node.alexykot.me
>>>> [6] http://bitcoin-seed.alexykot.me
>>>> [7] http://testnet-seed.alexykot.me
>>>> [8] http://node.alexykot.me/
>>>> [9] http://testnet-seed.alexykot.me/
>>>> [10] http://node.alexykot.me/
>>>> [11] http://testnet-seed.alexykot.me/
>>>> [12] http://testnet-seed.alexykot.me
>>>> [13] http://alexykot.me
>>>> [14] mailto:robert@mckay.com
>>>
>>>
>>> 
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>>
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>
>
> 
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