From: Alex Kotenko <alexykot@gmail•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] DNS seeds unstable
Date: Wed, 21 May 2014 10:23:08 +0100 [thread overview]
Message-ID: <CALDj+BZ8U29qKywO=Ejxx-WtKGvEyUg5RoYZb=j07oAOSq57yA@mail.gmail.com> (raw)
In-Reply-To: <a9d48b2474c87e6d9b80b567b782ecfa@webmail.mckay.com>
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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 bitcoin-seed.alexykot.me A
or directly
dig -p 8353 @node.alexykot.me bitcoin-seed.alexykot.me A
testnet seed
dig @node.alexykot.me testnet-seed.alexykot.me A
or directly
dig -p 18353 @node.alexykot.me 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>:
> 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>
> >> 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
>
>
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next prev parent reply other threads:[~2014-05-21 9:23 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
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 [this message]
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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