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To: bitcoin-development@lists.sourceforge.net
From: Andreas Schildbach <andreas@schildbach.de>
Date: Fri, 16 May 2014 18:34:36 +0200
Message-ID: <ll5ems$6pt$1@ger.gmane.org>
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In-Reply-To: <ll29m5$r6c$1@ger.gmane.org>
Subject: Re: [Bitcoin-development] DNS seeds unstable
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Apparently British Telecom also cannot speak to Peter Todd's server.

That another very large ISP in Europe.


On 05/15/2014 01:50 PM, Andreas Schildbach wrote:
> I'm bringing this issue up again. The current Bitcoin DNS seed
> infrastructure is unstable. I assume this is because of we're using a
> custom DNS implementation which is not 100% compatible. There have been
> bugs in the past, like a case sensitive match for the domain name.
> 
> Current state (seeds taken from bitcoinj):
> 
> mainnet:
> 
> seed.bitcoin.sipa.be			OK
> dnsseed.bluematt.me			OK
> dnsseed.bitcoin.dashjr.org		SERVFAIL, tried multiple ISPs
> seed.bitcoinstats.com			OK
> 
> testnet:
> 
> testnet-seed.bitcoin.petertodd.org	SERVFAIL, just from Telefonica
> testnet-seed.bluematt.me		OK (but only returns one node)
> 
> Note: Telefonica is one of Europe's largest ISPs.
> 
> I would try to improve DNS myself, but I'm not capable of writing C. My
> "fix" would be to reimplement everything in Java -- I doubt you guys
> would be happy with that.
> 
> 
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