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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] DNS seeds unstable
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I am sure the failure here is probably more mundane like a a service not
restarted, or not on auto restart when server is rebooted and such like.
The dns seeder works pretty efficiently in my experience. Maybe we need
more seeders and to include the ability for zone transfers so existing
seeders can spread their records to multiple servers running standard DNS
servers like bind etc.
On 15 May 2014 12:50, 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.
>
> 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.
>
>
>
> ------------------------------------------------------------------------------
> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE
> Instantly run your Selenium tests across 300+ browser/OS combos.
> Get unparalleled scalability from the best Selenium testing platform
> available
> Simple to use. Nothing to install. Get started now for free."
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> Bitcoin-development@lists.sourceforge.net
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--089e013d14c4faba8204f97379f2
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">I am sure the failure here is probably more mundane like a=
a service not restarted, or not on auto restart when server is rebooted an=
d such like. The dns seeder works pretty efficiently in my experience. Mayb=
e we need more seeders and to include the ability for zone transfers so exi=
sting seeders can spread their records to multiple servers running standard=
DNS servers like bind etc.</div>
<div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On 15 May 201=
4 12:50, Andreas Schildbach <span dir=3D"ltr"><<a href=3D"mailto:andreas=
@schildbach.de" target=3D"_blank">andreas@schildbach.de</a>></span> wrot=
e:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">I'm bringing this issue up again. The cu=
rrent Bitcoin DNS seed<br>
infrastructure is unstable. I assume this is because of we're using a<b=
r>
custom DNS implementation which is not 100% compatible. There have been<br>
bugs in the past, like a case sensitive match for the domain name.<br>
<br>
Current state (seeds taken from bitcoinj):<br>
<br>
mainnet:<br>
<br>
<a href=3D"http://seed.bitcoin.sipa.be" target=3D"_blank">seed.bitcoin.sipa=
.be</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0OK<br>
<a href=3D"http://dnsseed.bluematt.me" target=3D"_blank">dnsseed.bluematt.m=
e</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
OK<br>
<a href=3D"http://dnsseed.bitcoin.dashjr.org" target=3D"_blank">dnsseed.bit=
coin.dashjr.org</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0SERVFAI=
L, tried multiple ISPs<br>
<a href=3D"http://seed.bitcoinstats.com" target=3D"_blank">seed.bitcoinstat=
s.com</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 OK=
<br>
<br>
testnet:<br>
<br>
<a href=3D"http://testnet-seed.bitcoin.petertodd.org" target=3D"_blank">tes=
tnet-seed.bitcoin.petertodd.org</a> =C2=A0 =C2=A0 =C2=A0SERVFAIL, just from=
Telefonica<br>
<a href=3D"http://testnet-seed.bluematt.me" target=3D"_blank">testnet-seed.=
bluematt.me</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0OK (=
but only returns one node)<br>
<br>
Note: Telefonica is one of Europe's largest ISPs.<br>
<br>
I would try to improve DNS myself, but I'm not capable of writing C. My=
<br>
"fix" would be to reimplement everything in Java -- I doubt you g=
uys<br>
would be happy with that.<br>
<br>
<br>
---------------------------------------------------------------------------=
---<br>
"Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE=
<br>
Instantly run your Selenium tests across 300+ browser/OS combos.<br>
Get unparalleled scalability from the best Selenium testing platform availa=
ble<br>
Simple to use. Nothing to install. Get started now for free."<br>
<a href=3D"http://p.sf.net/sfu/SauceLabs" target=3D"_blank">http://p.sf.net=
/sfu/SauceLabs</a><br>
_______________________________________________<br>
Bitcoin-development mailing list<br>
<a href=3D"mailto:Bitcoin-development@lists.sourceforge.net">Bitcoin-develo=
pment@lists.sourceforge.net</a><br>
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" target=3D"_blank">https://lists.sourceforge.net/lists/listinfo/bitcoin-de=
velopment</a><br>
</blockquote></div><br></div>
--089e013d14c4faba8204f97379f2--
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