Re: DNS Search Rules

[Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>]

Kirk,

I'm not sure that this is governed by a standard, since it's not part of 
the way things work under-the-covers, it's just a feature of a program.

But, I agree with your client.  If you do ping 'bob', it should be 
looking for 'bob' first, then 'bob.xxxxx.yyyyyy.com', unless 
'yyyyyy.com' is in your DNS search list.

You can add a . as a suffix if you don't want it to automatically append 
the domain name.  So you could do 'bob.xxxxx.yyyyyy.com.'  (note the 
trailing dot) and it should ONLY look for that exact name.  Likewise, 
you could do 'bob.' and it'd only look for bob without any domain suffix.

Does that help?

-SK


On 7/16/2014 4:56 PM, Kirk Goins wrote:
> How the iSeries at 7.1 does it.
> CFGTCP Option #12
> Host Name = HHHHH
> Domain name =   xxxxx.yyyyyy.com
> Domain search list = *DFT
>
> Do ping to some name like just plain old BOB
> The iSeries searches for BOB.XXXXX.YYYYYY.COM
> If not found the iSeries searches for BOB.YYYYYY.COM
> Per my client that 2nd search should not happen
> Per IBM that is compliant with DNS standards
> In this case it was causing issues and invalid address was being returned.
>
> Da question fo any DNS GURU's Can you point me to and RFC or ??
> That outlines the correct search method that a computer should do
> per standards.  I want to provide docs that prove that he DNS search
> function
> on the iSeries is working or not working correctly.
>
> Thanks