named.conf: query-source address

[Paul Schmehl]

--On July 16, 2008 9:06:33 PM -0700 Chuck Swiger <cswiger at mac.com> wrote:

> On Jul 16, 2008, at 8:51 PM, Eugene Grosbein wrote:
>> On Wed, Jul 16, 2008 at 06:34:38PM +0100, Matthew Seaman wrote:
>>> The 'query-source' options don't have to be specified: the system
>>> will just choose some appropriate address according to the state of
>>> the routing table.  'query-source' to set the source /IP/ is really
>>> only useful in some specific server configurations with several alias
>>> addresses any of which could be used.  That's pretty rare really.
>>
>> Isn't this common to have multiple aliases at an interface?
>> Sometimes only one of them should be used for all DNS traffic.
>
> About the only common reason to set up multiple aliases on an interface
> is when you're doing something like hosting multiple SSL webservers on a
> single box which actually need to have distinct IPs as a consequence.
> Other than that, using public IPs for aliases is usually wasteful of IP
> address space.  YMMV...
>

I would have thought that the most common reason for setting up multiple 
aliases on an interface was for hosting multiple domains on a single 
server.  At least that's why I do it.

Paul Schmehl
If it isn't already obvious,
my opinions are my own and not
those of my employer.