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
>
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