restarting bind fixes some resolution issues

[Sten Carlsen]

> On 9 Jul 2017, at 17:04, Matus UHLAR - fantomas <uhlar at fantomas.sk> wrote:
> 
> On 09.07.17 14:36, Dario Corti wrote:
>> Hi, I occasionally have issues updating some packages, with the package manager saying that it cannot resolve deb.nodesource.com. I'm using 1:9.9.5.dfsg-9+deb8u11 and I verified that a bind restart fixes the problem every time (even if technically the domain CAN be resolved also before the restart).
> 
> https://mxtoolbox.com/SuperTool.aspx?action=dns%3adeb.nodesource.com&run=toolpage
> http://dnscheck.pingdom.com/?domain=deb.nodesource.com
> 
> both checkers report errors...
> 
>> I issued a dig before and after the restart and it does report something different, but I'm unable to understand it, so I wonder if anyone can suggest a possible reason for this.
>> 
>> Before: https://pastebin.com/7qZUmPKA
>> After: https://pastebin.com/U0DUhE20
> 
> i don't see any difference here, both cases report deb.nodesource.com to be
> a CNAME to d2buw04m05mirl.cloudfront.net - maybe you should look up that one
> next time problem appears.
The sequence of answers is different, this is not a difference as such, DNS does not normally use a specific sequence in the answers.

You should compare the answers so you verify that all the same records are present, sequence is of no meaning.
> 
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> Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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