Re: Is there something broken with DNS on Yosemite (and earlier OS versions) when running a daemon?
Re: Is there something broken with DNS on Yosemite (and earlier OS versions) when running a daemon?
- Subject: Re: Is there something broken with DNS on Yosemite (and earlier OS versions) when running a daemon?
- From: "Quinn \"The Eskimo!\"" <email@hidden>
- Date: Thu, 08 Jan 2015 07:46:50 +0000
On 7 Jan 2015, at 16:38, Stéphane Sudre <email@hidden> wrote:
> Also if you were to perform a nslookup (from the Terminal) query during that time with the same hosts' names, it would work fine.
I'm not sure what point you're tying to make with this test but I wanted to specifically call out that nslookup does not use the system DNS; it talks to a DNS server directly. Thus, it's very common for nslookup to behave very differently than standard DNS clients. A trivial example of this is:
$ nslookup fluffy.local.
Server: 192.168.1.254
Address: 192.168.1.254#53
** server can't find fluffy.local.: NXDOMAIN
$ ping fluffy.local.
PING fluffy.local (192.168.1.39): 56 data bytes
[...]
The system tries to ensure that nslookup uses a reasonable DNS server by default, but that's not always possible.
So, nslookup is a good way to test your DNS server, and your connectivity to that server, but it's not useful for testing the system DNS.
Share and Enjoy
--
Quinn "The Eskimo!" <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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