From: Andreas Schildbach <andreas@schildbach•de>
To: bitcoin-development@lists•sourceforge.net
Subject: Re: [Bitcoin-development] DNS seeds unstable
Date: Fri, 16 May 2014 11:15:34 +0200 [thread overview]
Message-ID: <ll4kvl$3nu$1@ger.gmane.org> (raw)
In-Reply-To: <CAAS2fgQrbK4LxWaeCmnJQKi_vUPByBDXFmxGfRG_3j0ZUsVEZQ@mail.gmail.com>
On 05/15/2014 07:48 PM, Gregory Maxwell wrote:
> On Thu, May 15, 2014 at 4:50 AM, Andreas Schildbach
> <andreas@schildbach•de> 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.
>
> If software is using the DNS seeds in a way where one or two being
> unavailable is problematic, then the software may be using them
> poorly.
>
> Generally DNS seeds should only be used as fast connectivity hints,
> primarily for initial connectivity. Relying on them exclusively
> increases isolation vulnerabilities (e.g. because the dns seed
> operators or any ISP or network attacker on the path between you and
> the seeds can replace the results with ones that isolate you on a
> bogus network).
I just used "nslookup", after seeing the issues in bitcoinj.
I agree that clients should be robust regarding DNS lookups (and
bitcoinj isn't), but still I think the first step needs to be
maintaining a quality infrastructure.
next prev parent reply other threads:[~2014-05-16 9:15 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-15 11:50 Andreas Schildbach
2014-05-15 17:17 ` Drak
2014-05-15 17:41 ` Jeff Garzik
2014-05-15 17:48 ` Gregory Maxwell
2014-05-16 9:15 ` Andreas Schildbach [this message]
2014-05-16 14:09 ` Mike Hearn
2014-05-15 18:05 ` Luke Dashjr
2014-05-16 16:34 ` Andreas Schildbach
2014-05-16 16:46 ` Matt Whitlock
2014-05-16 16:46 ` Laszlo Hanyecz
2014-05-16 17:07 ` Alex Kotenko
2014-05-16 22:02 ` Jeff Garzik
2014-05-17 0:58 ` Alex Kotenko
2014-05-17 11:39 ` Andreas Schildbach
2014-05-17 12:02 ` Alex Kotenko
2014-05-17 12:39 ` Andreas Schildbach
2014-05-19 20:14 ` Alex Kotenko
2014-05-19 20:22 ` Michael Wozniak
2014-05-19 20:38 ` Alex Kotenko
2014-05-19 20:36 ` Robert McKay
2014-05-19 23:49 ` Jeff Garzik
2014-05-20 0:44 ` Robert McKay
2014-05-20 0:50 ` Robert McKay
2014-05-21 9:23 ` Alex Kotenko
2014-05-21 11:03 ` Andreas Schildbach
2014-05-21 11:10 ` Alex Kotenko
2014-05-21 11:26 ` Andreas Schildbach
[not found] ` <537DBC3C.4090907@schildbach.de>
2014-06-11 13:57 ` Alex Kotenko
2014-06-11 14:24 ` Andreas Schildbach
2014-05-20 0:45 ` Michael Wozniak
2014-05-16 17:17 ` Rob Golding
2014-05-16 17:34 ` Nick Simpson
2014-05-16 21:46 ` Luke Dashjr
2014-05-16 18:53 ` Matt Corallo
2014-05-16 19:43 ` Andreas Schildbach
[not found] ` <8ADB6ABE-371C-4F4A-A003-F6751B01A12F@heliacal.net>
[not found] ` <53766148.1000708@bluematt.me>
2014-05-17 1:06 ` Matt Corallo
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