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From: Alex Kotenko <alexykot@gmail.com>
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Subject: Re: [Bitcoin-development] DNS seeds unstable
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Misunderstanding. Both seeds are available on port 53 via BIND forwarding.
Just also each DNS seed is available separately on it's own port.
Best regards,
Alex Kotenko
2014-05-21 12:03 GMT+01:00 Andreas Schildbach <andreas@schildbach.de>:
> Great, thanks for this contribution!
>
> Do you plan to have your seeds reachable on port 53 eventually?
> Currently bitcoinj cannot deal with nonstandard ports I think.
>
>
> On 05/21/2014 11:23 AM, Alex Kotenko wrote:
> > okay, I've set it up with bind forwarding requests to two dnsseeds
> > running on separate ports. Though I see a problem with testnet DNS seed
> > itself. It runs, but somehow it only returns one IP address. Exactly
> > same DNS seeder looking for mainnet nodes is working fine.
> >
> > You can reach seeds through
> > mainnet seed:
> > dig @node.alexykot.me <http://node.alexykot.me> bitcoin-seed.alexykot.me
> > <http://bitcoin-seed.alexykot.me> A
> > or directly
> > dig -p 8353 @node.alexykot.me <http://node.alexykot.me>
> > bitcoin-seed.alexykot.me <http://bitcoin-seed.alexykot.me> A
> >
> > testnet seed
> > dig @node.alexykot.me <http://node.alexykot.me> testnet-seed.alexykot.me
> > <http://testnet-seed.alexykot.me> A
> > or directly
> > dig -p 18353 @node.alexykot.me <http://node.alexykot.me>
> > testnet-seed.alexykot.me <http://testnet-seed.alexykot.me> A
> >
> > So what can be the problem with testnet DNS seeder?
> >
> >
> > Best regards,
> > Alex Kotenko
> >
> >
> > 2014-05-20 1:50 GMT+01:00 Robert McKay <robert@mckay.com
> > <mailto:robert@mckay.com>>:
> >
> > On Tue, 20 May 2014 01:44:29 +0100, Robert McKay wrote:
> > > On Mon, 19 May 2014 19:49:52 -0400, Jeff Garzik wrote:
> > >> On Mon, May 19, 2014 at 4:36 PM, Robert McKay <robert@mckay.com
> > <mailto:robert@mckay.com>>
> > >> wrote:
> > >>> It should be possible to configure bind as a DNS forwarder.. this
> > >>> can
> > >>> be done in a zone context.. then you can forward the different
> > >>> zones
> > >>> to
> > >>> different dnsseed daemons running on different non-public IPs or
> > >>> two
> > >>> different ports on the same IP (or on one single non-public IP
> > >>> since
> > >>> there's really no reason to expose the dnsseed directly daemon at
> > >>> all).
> > >>
> > >> Quite the opposite. dnsseed data rotates through a lot of
> addresses
> > >> if available. Using the bind/zone-xfer system would result in
> fewer
> > >> total addresses going through to the clients, thanks to the
> addition
> > >> of caching levels that the bind/zone-xfer system brings.
> > >>
> > >> That said, if the choice is between no-service and bind, bind it
> is
> > >> ;p
> > >
> > > Setting it up as a zone forwarder causes each request to go through
> > > to
> > > the dnsseed backend for each request.
> >
> > This stackoverflow describes a similar situation;
> >
> > http://stackoverflow.com/questions/15338232/how-to-forward-a-subzone
> >
> > you can additionally specify the port to forward too;
> >
> > http://www.zytrax.com/books/dns/ch7/queries.html#forwarders
> >
> > it should be possible to forward to different ports on 127.0.0.1 for
> > each dnsseed instance.
> >
> > Rob
> >
> >
> ------------------------------------------------------------------------------
> > "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."
> > http://p.sf.net/sfu/SauceLabs
> > _______________________________________________
> > Bitcoin-development mailing list
> > Bitcoin-development@lists.sourceforge.net
> > <mailto:Bitcoin-development@lists.sourceforge.net>
> > https://lists.sourceforge.net/lists/listinfo/bitcoin-development
> >
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> > "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."
> > http://p.sf.net/sfu/SauceLabs
> >
> >
> >
> > _______________________________________________
> > Bitcoin-development mailing list
> > Bitcoin-development@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/bitcoin-development
> >
>
>
>
>
> ------------------------------------------------------------------------------
> "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."
> http://p.sf.net/sfu/SauceLabs
> _______________________________________________
> Bitcoin-development mailing list
> Bitcoin-development@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>
--20cf302efaf618e9f404f9e70fce
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:courier =
new,monospace;color:#003300">Misunderstanding. Both seeds are available on =
port 53 via BIND forwarding.</div><div class=3D"gmail_default" style=3D"fon=
t-family:courier new,monospace;color:#003300">
Just also each DNS seed is available separately on it's own port.</div>=
<div class=3D"gmail_extra"><br></div><div class=3D"gmail_extra"><br clear=
=3D"all"><div><div dir=3D"ltr"><span style=3D"color:rgb(0,51,0);font-family=
:'courier new',monospace">Best regards,=C2=A0</span><div>
<div><div style=3D"text-align:left"><font color=3D"#003300" face=3D"'co=
urier new', monospace" style=3D"text-align:-webkit-auto">Alex Kotenko</=
font></div></div></div></div></div>
<br><br><div class=3D"gmail_quote">2014-05-21 12:03 GMT+01:00 Andreas Schil=
dbach <span dir=3D"ltr"><<a href=3D"mailto:andreas@schildbach.de" target=
=3D"_blank">andreas@schildbach.de</a>></span>:<br><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">
Great, thanks for this contribution!<br>
<br>
Do you plan to have your seeds reachable on port 53 eventually?<br>
Currently bitcoinj cannot deal with nonstandard ports I think.<br>
<div class=3D""><br>
<br>
On 05/21/2014 11:23 AM, Alex Kotenko wrote:<br>
> okay, I've set it up with bind forwarding requests to two dnsseeds=
<br>
> running on separate ports. Though I see a problem with testnet DNS see=
d<br>
> itself. It runs, but somehow it only returns one IP address. Exactly<b=
r>
> same DNS seeder looking for mainnet nodes is working fine.<br>
><br>
> You can reach seeds through<br>
> mainnet seed:<br>
</div>> dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.=
alexykot.me</a> <<a href=3D"http://node.alexykot.me" target=3D"_blank">h=
ttp://node.alexykot.me</a>> <a href=3D"http://bitcoin-seed.alexykot.me" =
target=3D"_blank">bitcoin-seed.alexykot.me</a><br>
> <<a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_blank">http=
://bitcoin-seed.alexykot.me</a>> A<br>
> or directly<br>
> dig -p 8353 @<a href=3D"http://node.alexykot.me" target=3D"_blank">nod=
e.alexykot.me</a> <<a href=3D"http://node.alexykot.me" target=3D"_blank"=
>http://node.alexykot.me</a>><br>
> <a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_blank">bitcoin-=
seed.alexykot.me</a> <<a href=3D"http://bitcoin-seed.alexykot.me" target=
=3D"_blank">http://bitcoin-seed.alexykot.me</a>> A<br>
><br>
> testnet seed<br>
> dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.alexyk=
ot.me</a> <<a href=3D"http://node.alexykot.me" target=3D"_blank">http://=
node.alexykot.me</a>> <a href=3D"http://testnet-seed.alexykot.me" target=
=3D"_blank">testnet-seed.alexykot.me</a><br>
> <<a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">http=
://testnet-seed.alexykot.me</a>> A<br>
> or directly<br>
> dig -p 18353 @<a href=3D"http://node.alexykot.me" target=3D"_blank">no=
de.alexykot.me</a> <<a href=3D"http://node.alexykot.me" target=3D"_blank=
">http://node.alexykot.me</a>><br>
> <a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">testnet-=
seed.alexykot.me</a> <<a href=3D"http://testnet-seed.alexykot.me" target=
=3D"_blank">http://testnet-seed.alexykot.me</a>> A<br>
<div class=3D"">><br>
> So what can be the problem with testnet DNS seeder?<br>
><br>
><br>
> Best regards,<br>
> Alex Kotenko<br>
><br>
><br>
> 2014-05-20 1:50 GMT+01:00 Robert McKay <<a href=3D"mailto:robert@mc=
kay.com">robert@mckay.com</a><br>
</div>> <mailto:<a href=3D"mailto:robert@mckay.com">robert@mckay.com<=
/a>>>:<br>
<div class=3D"">><br>
> =C2=A0 =C2=A0 On Tue, 20 May 2014 01:44:29 +0100, Robert McKay wrote:<=
br>
> =C2=A0 =C2=A0 > On Mon, 19 May 2014 19:49:52 -0400, Jeff Garzik wro=
te:<br>
> =C2=A0 =C2=A0 >> On Mon, May 19, 2014 at 4:36 PM, Robert McKay &=
lt;<a href=3D"mailto:robert@mckay.com">robert@mckay.com</a><br>
</div>> =C2=A0 =C2=A0 <mailto:<a href=3D"mailto:robert@mckay.com">rob=
ert@mckay.com</a>>><br>
<div><div class=3D"h5">> =C2=A0 =C2=A0 >> wrote:<br>
> =C2=A0 =C2=A0 >>> It should be possible to configure bind as =
a DNS forwarder.. this<br>
> =C2=A0 =C2=A0 >>> can<br>
> =C2=A0 =C2=A0 >>> be done in a zone context.. then you can fo=
rward the different<br>
> =C2=A0 =C2=A0 >>> zones<br>
> =C2=A0 =C2=A0 >>> to<br>
> =C2=A0 =C2=A0 >>> different dnsseed daemons running on differ=
ent non-public IPs or<br>
> =C2=A0 =C2=A0 >>> two<br>
> =C2=A0 =C2=A0 >>> different ports on the same IP (or on one s=
ingle non-public IP<br>
> =C2=A0 =C2=A0 >>> since<br>
> =C2=A0 =C2=A0 >>> there's really no reason to expose the =
dnsseed directly daemon at<br>
> =C2=A0 =C2=A0 >>> all).<br>
> =C2=A0 =C2=A0 >><br>
> =C2=A0 =C2=A0 >> Quite the opposite. =C2=A0dnsseed data rotates =
through a lot of addresses<br>
> =C2=A0 =C2=A0 >> if available. =C2=A0Using the bind/zone-xfer sy=
stem would result in fewer<br>
> =C2=A0 =C2=A0 >> total addresses going through to the clients, t=
hanks to the addition<br>
> =C2=A0 =C2=A0 >> of caching levels that the bind/zone-xfer syste=
m brings.<br>
> =C2=A0 =C2=A0 >><br>
> =C2=A0 =C2=A0 >> That said, if the choice is between no-service =
and bind, bind it is<br>
> =C2=A0 =C2=A0 >> ;p<br>
> =C2=A0 =C2=A0 ><br>
> =C2=A0 =C2=A0 > Setting it up as a zone forwarder causes each reque=
st to go through<br>
> =C2=A0 =C2=A0 > to<br>
> =C2=A0 =C2=A0 > the dnsseed backend for each request.<br>
><br>
> =C2=A0 =C2=A0 This stackoverflow describes a similar situation;<br>
><br>
> =C2=A0 =C2=A0 <a href=3D"http://stackoverflow.com/questions/15338232/h=
ow-to-forward-a-subzone" target=3D"_blank">http://stackoverflow.com/questio=
ns/15338232/how-to-forward-a-subzone</a><br>
><br>
> =C2=A0 =C2=A0 you can additionally specify the port to forward too;<br=
>
><br>
> =C2=A0 =C2=A0 <a href=3D"http://www.zytrax.com/books/dns/ch7/queries.h=
tml#forwarders" target=3D"_blank">http://www.zytrax.com/books/dns/ch7/queri=
es.html#forwarders</a><br>
><br>
> =C2=A0 =C2=A0 it should be possible to forward to different ports on 1=
27.0.0.1 for<br>
> =C2=A0 =C2=A0 each dnsseed instance.<br>
><br>
> =C2=A0 =C2=A0 Rob<br>
><br>
> =C2=A0 =C2=A0 --------------------------------------------------------=
----------------------<br>
> =C2=A0 =C2=A0 "Accelerate Dev Cycles with Automated Cross-Browser=
Testing - For FREE<br>
> =C2=A0 =C2=A0 Instantly run your Selenium tests across 300+ browser/OS=
combos.<br>
> =C2=A0 =C2=A0 Get unparalleled scalability from the best Selenium test=
ing platform<br>
> =C2=A0 =C2=A0 available<br>
> =C2=A0 =C2=A0 Simple to use. Nothing to install. Get started now for f=
ree."<br>
> =C2=A0 =C2=A0 <a href=3D"http://p.sf.net/sfu/SauceLabs" target=3D"_bla=
nk">http://p.sf.net/sfu/SauceLabs</a><br>
> =C2=A0 =C2=A0 _______________________________________________<br>
> =C2=A0 =C2=A0 Bitcoin-development mailing list<br>
> =C2=A0 =C2=A0 <a href=3D"mailto:Bitcoin-development@lists.sourceforge.=
net">Bitcoin-development@lists.sourceforge.net</a><br>
</div></div>> =C2=A0 =C2=A0 <mailto:<a href=3D"mailto:Bitcoin-develop=
ment@lists.sourceforge.net">Bitcoin-development@lists.sourceforge.net</a>&g=
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listinfo/bitcoin-development</a><br>
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><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 a=
vailable<br>
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in-development</a><br>
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<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>
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</div></div></blockquote></div><br></div></div>
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