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From: Alex Kotenko <alexykot@gmail.com>
Date: Sun, 1 Jun 2014 10:56:52 +0100
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>,
	Andreas Schildbach <andreas@schildbach.de>
Subject: Re: [Bitcoin-development] testnet-seed.bitcoin.petertodd.org is up
	again
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So generally it seems impossible to have both DNS seeds running on same IP
address. Too bad.
Ok, I'll switch to serving only testnet DNS on this server for now, as this
seems to be a much bigger problem than mainnet. Later I might buy second IP
to setup mainnet DNS also.


Best regards,
Alex Kotenko


2014-05-30 15:51 GMT+01:00 Robert McKay <robert@mckay.com>:

> No, I don't think so. The problem is the 'aa' flag is missing (see the
> 'flags' section in dig). Perhaps if you could suppress the authority
> records the recursor would give up and just accept the non-authorative
> answer, but that isn't a good solution even if it might work for some
> resolvers.
>
> Rob
>
>
> On Fri, 30 May 2014 15:13:36 +0100, Alex Kotenko wrote:
>
>> Hmm, you might be right, as queries
>> dig @node.alexykot.me [8] testnet-seed.alexykot.me [9]
>>
>> =E2=80=8Band
>>  dig @node.alexykot.me [10] -p 18353 testnet-seed.alexykot.me
>> [11]=E2=80=8B
>>
>> =E2=80=8Bare giving different authority sections.
>>
>> Hmm, but if I setup custom SOA record for it - it should work,
>> right?
>>  What SOA name should it be actually, assuming that NS record for
>> testnet-seed.alexykot.me [12] is pointing at alexykot.me [13]?
>>
>> Best regards,
>>
>> Alex Kotenko
>>
>> 2014-05-30 14:41 GMT+01:00 Robert McKay :
>>
>>  Hi Alex,
>>>
>>> I think the problem is with my suggestion to use bind forwarding..
>>> basically bind is stripping off the authorative answer bit in the
>>> reply.. this causes the recursor to go into a loop chasing the
>>> authority server which again returns a non-authoritve answer with
>>> itself as the authority again. Im not sure if this can be fixed
>>> without hacking the bind src, so maybe it wasnt such a great
>>>
>>> suggestion in the first place. Basically I think if bind was
>>> returning authorative answers it would work, but I cant see any way
>>>
>>> to make that happen in the bind configuration.
>>>
>>> Rob
>>>
>>> On Fri, 30 May 2014 14:19:05 +0100, Alex Kotenko wrote:
>>>
>>>  Hi Peter
>>>>
>>>> Ive setup DNS seeds myself a week ago, at
>>>> testnet-seed.alexykot.me [1] [6]
>>>> and bitcoin-seed.alexykot.me [2] [7], but there is a problem with
>>>>
>>>> DNS
>>>> settings that we with Andreas couldnt sort out quickly.
>>>>
>>>> The problem itself is that I can reach my nameserver and get
>>>> dnsseed
>>>> response if I query it directly with
>>>>  dig @node.alexykot.me [3] [8] testnet-seed.alexykot.me [4] [9]
>>>>
>>>>  dig @node.alexykot.me [5] [10] bitcoin-seed.alexykot.me [6]
>>>> [11]
>>>>
>>>> =E2=80=8BBut when I try nslookup testnet-seed.alexykot.me [7] [12]=E2=
=80=8B -
>>>>
>>>> it
>>>> fails.
>>>> I guess the problem is in my DNS settings but I cant figure out
>>>> what
>>>> is it.
>>>>
>>>> =E2=80=8BS o could you share
>>>> =E2=80=8Bhow you configured DNS
>>>>  =E2=80=8B for your seed
>>>> =E2=80=8B to help me debug
>>>>  =E2=80=8Bmine
>>>> ?
>>>>
>>>> Best regards,
>>>>
>>>> Alex Kotenko
>>>>
>>>> =E2=80=8B
>>>>
>>>
>>
>> Links:
>> ------
>> [1] http://testnet-seed.alexykot.me
>> [2] http://bitcoin-seed.alexykot.me
>> [3] http://node.alexykot.me
>> [4] http://testnet-seed.alexykot.me
>> [5] http://node.alexykot.me
>> [6] http://bitcoin-seed.alexykot.me
>> [7] http://testnet-seed.alexykot.me
>> [8] http://node.alexykot.me/
>> [9] http://testnet-seed.alexykot.me/
>> [10] http://node.alexykot.me/
>> [11] http://testnet-seed.alexykot.me/
>> [12] http://testnet-seed.alexykot.me
>> [13] http://alexykot.me
>> [14] mailto:robert@mckay.com
>>
>
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:courier =
new,monospace;color:#003300">So generally it seems impossible to have both =
DNS seeds running on same IP address. Too bad.=C2=A0</div><div class=3D"gma=
il_default" style=3D"font-family:courier new,monospace;color:#003300">

Ok, I&#39;ll switch to serving only testnet DNS on this server for now, as =
this seems to be a much bigger problem than mainnet. Later I might buy seco=
nd IP to setup mainnet DNS also.</div><div class=3D"gmail_default" style=3D=
"font-family:courier new,monospace;color:#003300">

<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:&#39;courier new&#39;,monosp=
ace">Best regards,=C2=A0</span><div><div><div style=3D"text-align:left"><fo=
nt color=3D"#003300" face=3D"&#39;courier new&#39;, monospace" style=3D"tex=
t-align:-webkit-auto">Alex Kotenko</font></div>

</div></div></div></div>
<br><br><div class=3D"gmail_quote">2014-05-30 15:51 GMT+01:00 Robert McKay =
<span dir=3D"ltr">&lt;<a href=3D"mailto:robert@mckay.com" target=3D"_blank"=
>robert@mckay.com</a>&gt;</span>:<br><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

No, I don&#39;t think so. The problem is the &#39;aa&#39; flag is missing (=
see the &#39;flags&#39; section in dig). Perhaps if you could suppress the =
authority records the recursor would give up and just accept the non-author=
ative answer, but that isn&#39;t a good solution even if it might work for =
some resolvers.<br>


<br>
Rob<div class=3D""><br>
<br>
On Fri, 30 May 2014 15:13:36 +0100, Alex Kotenko wrote:<br>
</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex"><div class=3D"">
Hmm, you might be right, as queries=C2=A0<br></div>
dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.alexykot.me=
</a> [8]=C2=A0<a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank"=
>testnet-seed.alexykot.me</a> [9]<br>
<br>
=E2=80=8Band=C2=A0<br>
=C2=A0dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.alexy=
kot.me</a> [10]=C2=A0-p 18353=C2=A0<a href=3D"http://testnet-seed.alexykot.=
me" target=3D"_blank">testnet-seed.alexykot.me</a><br>
[11]=E2=80=8B<br>
<br>
=E2=80=8Bare giving different authority sections.<br>
<br>
Hmm, but if I setup custom SOA record for it - it should work,<br>
right?=C2=A0<br>
=C2=A0What SOA name should it be actually, assuming that NS record for<br>
<a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">testnet-seed.=
alexykot.me</a> [12] is pointing at <a href=3D"http://alexykot.me" target=
=3D"_blank">alexykot.me</a> [13]?<br>
<br>
Best regards,=C2=A0<br>
<br>
Alex Kotenko<br>
<br>
2014-05-30 14:41 GMT+01:00 Robert McKay :<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div class=3D"">
Hi Alex,<br>
<br>
I think the problem is with my suggestion to use bind forwarding..<br>
basically bind is stripping off the authorative answer bit in the<br>
reply.. this causes the recursor to go into a loop chasing the<br>
authority server which again returns a non-authoritve answer with<br></div>
itself as the authority again. Im not sure if this can be fixed<br>
without hacking the bind src, so maybe it wasnt such a great<div class=3D""=
><br>
suggestion in the first place. Basically I think if bind was<br></div>
returning authorative answers it would work, but I cant see any way<div cla=
ss=3D""><br>
to make that happen in the bind configuration.<br>
<br>
Rob<br>
<br>
On Fri, 30 May 2014 14:19:05 +0100, Alex Kotenko wrote:<br>
<br>
</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex"><div class=3D"">
Hi Peter<br>
<br>
Ive setup DNS seeds myself a week ago, at<br>
</div><a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">testnet=
-seed.alexykot.me</a> [1] [6]<br>
and <a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_blank">bitcoin-s=
eed.alexykot.me</a> [2] [7], but there is a problem with<div class=3D""><br=
>
DNS<br>
settings that we with Andreas couldnt sort out quickly.<br>
<br>
The problem itself is that I can reach my nameserver and get<br>
dnsseed<br>
response if I query it directly with<br></div>
=C2=A0dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.alexy=
kot.me</a> [3] [8] <a href=3D"http://testnet-seed.alexykot.me" target=3D"_b=
lank">testnet-seed.alexykot.me</a> [4] [9]<br>
<br>
=C2=A0dig @<a href=3D"http://node.alexykot.me" target=3D"_blank">node.alexy=
kot.me</a> [5] [10] <a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_=
blank">bitcoin-seed.alexykot.me</a> [6]<br>
[11]<br>
<br>
=E2=80=8BBut when I try nslookup <a href=3D"http://testnet-seed.alexykot.me=
" target=3D"_blank">testnet-seed.alexykot.me</a> [7] [12]=E2=80=8B -<div cl=
ass=3D""><br>
it<br>
fails.=C2=A0<br>
I guess the problem is in my DNS settings but I cant figure out<br>
what<br>
is it.<br>
<br>
=E2=80=8BS o could you share<br>
=E2=80=8Bhow you configured=C2=A0DNS<br>
=C2=A0=E2=80=8B for your seed<br>
=E2=80=8B to help me debug<br>
=C2=A0=E2=80=8Bmine<br>
?=C2=A0<br>
<br>
Best regards,=C2=A0<br>
<br>
Alex Kotenko<br>
<br>
=E2=80=8B<br>
</div></blockquote></blockquote>
<br>
<br>
Links:<br>
------<br>
[1] <a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">http://te=
stnet-seed.alexykot.<u></u>me</a><br>
[2] <a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_blank">http://bi=
tcoin-seed.alexykot.<u></u>me</a><br>
[3] <a href=3D"http://node.alexykot.me" target=3D"_blank">http://node.alexy=
kot.me</a><br>
[4] <a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">http://te=
stnet-seed.alexykot.<u></u>me</a><br>
[5] <a href=3D"http://node.alexykot.me" target=3D"_blank">http://node.alexy=
kot.me</a><br>
[6] <a href=3D"http://bitcoin-seed.alexykot.me" target=3D"_blank">http://bi=
tcoin-seed.alexykot.<u></u>me</a><br>
[7] <a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">http://te=
stnet-seed.alexykot.<u></u>me</a><br>
[8] <a href=3D"http://node.alexykot.me/" target=3D"_blank">http://node.alex=
ykot.me/</a><br>
[9] <a href=3D"http://testnet-seed.alexykot.me/" target=3D"_blank">http://t=
estnet-seed.alexykot.<u></u>me/</a><br>
[10] <a href=3D"http://node.alexykot.me/" target=3D"_blank">http://node.ale=
xykot.me/</a><br>
[11] <a href=3D"http://testnet-seed.alexykot.me/" target=3D"_blank">http://=
testnet-seed.alexykot.<u></u>me/</a><br>
[12] <a href=3D"http://testnet-seed.alexykot.me" target=3D"_blank">http://t=
estnet-seed.alexykot.<u></u>me</a><br>
[13] <a href=3D"http://alexykot.me" target=3D"_blank">http://alexykot.me</a=
><br>
[14] mailto:<a href=3D"mailto:robert@mckay.com" target=3D"_blank">robert@mc=
kay.com</a><br>
</blockquote>
<br>
</blockquote></div><br></div></div>

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