Nslookup not showng TTL

Doug Barton dougb at dougbarton.us
Fri Oct 16 01:10:25 UTC 2009


Kevin Darcy wrote:
> John Horne wrote:
>> On Thu, 2009-10-15 at 10:47 +0200, Adam Tkac wrote:
>>  
>>> On Thu, Oct 15, 2009 at 09:06:56AM +0100, John Horne wrote:
>>>    
>>>> How can I see the TTL value using nslookup?
>>>>       
>>> I'm not sure how force nslookup to show TTL but the `dig` utility is
>>> far more better tool for getting such information:
>>>
>>>     
>> I agree, it's not for me though :-)
>>
>> I have to teach some Windows people about the DNS, and wanted to show
>> them that they could use 'nslookup' on either the Linux box provided, or
>> their own Windows PC's. In this instance the TTL is important. So I was
>> hoping that the MS and BIND nslookup commands would display something
>> pretty much similar to each other so as not to confuse the people too
>> much.
>>
>> As far as I can tell no BIND 9 nslookup command shows the TTL. I am
>> currently looking at an 8.2.3 version to see if I can patch the 9.5.1
>> one to display TTL's again. It may, however, be better to introduce them
>> to dig rather than having to maintain the nslookup command.
>>   
> Removing features from nslookup gets us that much closer to KILLING and
> BURYING it. Forever.
> 
> If I had a nickel for every time someone mis-read the output of nslookup
> and mistook the nameserver's name, for the name of the server they're
> actually looking up, well, let's just say I probably wouldn't be posting
> to bind-users from my work account...
> 
> (Fortunately nslookup's whole "won't do a lookup because I can't
> reverse-resolve my resolver" bogosity isn't really an issue at Chrysler,
> since we maintain proper reverse mappings, but that's another popular
> "nslookup sucks, don't use it"-category posting to this mailing list)

http://dougbarton.us/DNS/bind-users-FAQ.html#nslookup-evil

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