[BALUG-Admin] DNS slaves for BALUG? :-) ... IPv6 issue somewhere between master and slaves?

[Michael Paoli]

No problem, I'll take a look, and let you know what I find.

Quite likely it's lack of IPv6 or some other IPv6 issue
on slave end(s), but I'll do some further checking to see if I can
isolate it to that (at least for ns1.linuxmafia.com. - I'm presuming
same/similar for ns1.svlug.org.), and see whether or not
zone can be pulled via IPv6 - and beyond the IPv6 addresses
where I've done so on my home networks (all of which happen to
be via same ISP for IPv6 - so would be good to check from some
other(s) - I think I may have a location or two (or three or more?) that
I may be able to check that from).

Thanks, I'll let you know.


> From: "Rick Moen" <rick@linuxmafia.com>
> Subject: Re: [BALUG-Admin] DNS slaves for BALUG?  :-)
> Date: Sat, 20 Feb 2016 18:33:09 -0800

> I wrote:
>
>> Quoting Michael Paoli (Michael.Paoli@cal.berkeley.edu):
>>
>> > If you could please, and would be willing,
>> > could you cover DNS slave services for BALUG,
>> > notably these zones:
>> > e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa
>> > balug.org
>> > master(s) (all for each of the above):
>> > 198.144.194.238
>> > 2001:470:1f04:19e::2
>>
>> FYI, ns1.linuxmafia.com is repeatedly logging this:
>>
>> Feb 20 17:50:45 linuxmafia named[17291]: zone  
>> e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa/IN: refresh: failure  
>> trying master 2001:470:1f04:19e::2#53 (source ::#0): operation  
>> canceled
>>
>> I'm unsure why the AXFR/IXFR to the IPv6 address fails, and currently
>> lack the time and patience to pursue that matter.  For now, I'm going to
>> disable that master IP on my BIND9 conffile.
>
> Before I do that, Michael, would you like to any some checking on the
> _master_ nameserver end?  The most probable explanation is some deficiency
> in IPv6 support on ns1.linuxmafia.com, and that would be my default
> assumption.
>
> FYI, both zones are affected:
>
> linuxmafia:/etc/bind# zgrep 'failure trying master' /var/log/*
> /var/log/daemon.log:Feb 20 12:55:59 linuxmafia named[17291]: zone  
> balug.org/IN: refresh: failure trying master 2001:470:1f04:19e::2#53  
> (source ::#0): operation canceled
> /var/log/daemon.log:Feb 20 13:39:16 linuxmafia named[17291]: zone  
> e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa/IN: refresh: failure trying  
> master 2001:470:1f04:19e::2#53 (source ::#0): operation canceled
> /var/log/daemon.log:Feb 20 17:50:45 linuxmafia named[17291]: zone  
> e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa/IN: refresh: failure trying  
> master 2001:470:1f04:19e::2#53 (source ::#0): operation canceled
> /var/log/syslog:Feb 20 12:55:59 linuxmafia named[17291]: zone  
> balug.org/IN: refresh: failure trying master 2001:470:1f04:19e::2#53  
> (source ::#0): operation canceled
> /var/log/syslog:Feb 20 13:39:16 linuxmafia named[17291]: zone  
> e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa/IN: refresh: failure trying  
> master 2001:470:1f04:19e::2#53 (source ::#0): operation canceled
> /var/log/syslog:Feb 20 17:50:45 linuxmafia named[17291]: zone  
> e.9.1.0.5.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa/IN: refresh: failure trying  
> master 2001:470:1f04:19e::2#53 (source ::#0): operation canceled
> linuxmafia:/etc/bind#