Groups > comp.lang.java.programmer > #4197

Re: Nslookup

Newsgroups	comp.lang.java.programmer
From	Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at>
Subject	Re: Nslookup
References	<9973d98a-f6db-4908-8651-575affbfbdf4@q32g2000yqn.googlegroups.com> <niu3t6due7uc9kqoq0aul1am9ohgnp7sgg@4ax.com> <iqsurh$95v$1@lust.ihug.co.nz> <5o34t6h6h57l2khevjmrptumkbpt3pe576@4ax.com> <iqt6vf$dqg$1@lust.ihug.co.nz>
Message-ID	<slrnit4drb.phi.avl@gamma.logic.tuwien.ac.at> (permalink)
Date	2011-05-17 08:52 +0000

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Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> wrote:
> In message <5o34t6h6h57l2khevjmrptumkbpt3pe576@4ax.com>, Roedy Green wrote:
>> On Tue, 17 May 2011 16:50:57 +1200, Lawrence D'Oliveiro
>> <ldo@geek-central.gen.new_zealand> wrote, quoted or indirectly quoted
>> someone who said :
>>> People running the servers try to balance loads. What is the relevance of
>>> that to what DNS servers you use?
>> The answer seems so obvious that I wonder if I am misinterpreting your
>> question.  If the IAP has 3 servers and he tells 1/3 of his customers
>> to use each server, it will optimise throughput.  If his customers
>> ignore his request and all go direct to server 0, they will overload
>> that server and waste the power of the other two.
> What servers exactly are you talking about? DNS servers or something else?

Roedy is talking about providers that have a reason to offer one(or two)
particular ones of their own DNS-Servers to each of their users.  Whether
that is technically done with DHCP, PPP (or whatever else) is irrelevant.

Now, whether a user decides to use the DNS offered by his ISP, or a different
one is not Roedy's business.  If all users of a particular ISP were to hard-
configure one particular of their ISP's DNS servers, then it would be the ISP's
business to take measures against the imbalance, and also to examine, why
users were taking the effort to pick a particular one over the default,
in the first place.

I'm using UMTS for my dialup from home, and casually I get bogus DNSs, like
10.1.2.3 and 10.1.2.4.  Therefore I did hardcode some DNS in my /etc/resolv.conf
and did  chattr +i /etc/resolv.conf  just so pppd won't overwrite it with its
casual bogus values. 

Finally, it is sometimes worthwhile to ask a particular non-default DNS for a 
particular hostname without temporarily reconfiguring the system for that
particular DNS ...

Fortunately, however, even the newer "host" utility *does* allow to specify
a particular DNS for a query just like nslookup did.

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Nslookup Joe Snodgrass <joe.snod@yahoo.com> - 2011-05-16 05:39 -0700
  Re: Nslookup "Fred Zwarts" <F.Zwarts@KVI.nl> - 2011-05-16 14:56 +0200
    Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-16 13:22 -0400
      Re: Nslookup red floyd <redfloyd@gmail.com> - 2011-05-16 16:06 -0700
        Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-16 21:15 -0400
          Re: Nslookup bugbear <bugbear@trim_papermule.co.uk_trim> - 2011-05-18 09:38 +0100
            Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-18 13:13 -0400
              Re: Nslookup Michael Doubez <michael.doubez@free.fr> - 2011-05-18 14:26 -0700
                Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-18 18:26 -0400
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 01:27 -0400
                Re: Nslookup Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2011-05-19 10:01 +0200
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 12:40 -0400
                Re: Nslookup dougatmilmacdotcom@example.com (Doug Miller) - 2011-05-19 17:15 +0000
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 13:25 -0400
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-19 13:45 -0400
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 14:04 -0400
                Re: Nslookup dougatmilmacdotcom@example.com (Doug Miller) - 2011-05-19 18:31 +0000
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 14:45 -0400
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-19 21:43 -0400
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-20 00:07 -0400
                Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-19 11:19 +0100
                Re: Nslookup Michael Doubez <michael.doubez@free.fr> - 2011-05-19 00:42 -0700
                Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-19 10:03 -0400
                Re: Nslookup thingamabob <thingamabob117@gmai1.c0m> - 2011-05-19 12:44 -0400
                Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-19 10:08 -0400
                Re: Nslookup Michael Doubez <michael.doubez@free.fr> - 2011-05-20 00:55 -0700
              Re: Nslookup bugbear <bugbear@trim_papermule.co.uk_trim> - 2011-05-19 09:33 +0100
                Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-19 11:21 +0100
        Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-16 22:24 -0400
          Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-17 00:19 -0400
            Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-17 07:01 -0400
              Re: Nslookup Lew <noone@lewscanon.com> - 2011-05-17 07:22 -0400
                Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-17 14:07 +0100
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-17 12:32 -0400
              Re: Nslookup Bill B <me@privacy.net> - 2011-05-17 07:29 -0400
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-17 08:18 -0400
                Re: Nslookup Bill B <me@privacy.net> - 2011-05-17 08:30 -0400
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-17 10:31 -0400
                Re: Nslookup Bill B <me@privacy.net> - 2011-05-17 11:10 -0400
                Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-17 16:20 +0100
                Re: Nslookup Jerry Stuckle <jstucklex@attglobal.net> - 2011-05-17 12:31 -0400
                Re: Nslookup Tim Streater <timstreater@waitrose.com> - 2011-05-17 17:55 +0100
                Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-17 14:08 +0100
  Re: Nslookup The Natural Philosopher <tnp@invalid.invalid> - 2011-05-16 17:23 +0100
  Re: Nslookup Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-17 09:06 +1200
  Re: Nslookup Roedy Green <see_website@mindprod.com.invalid> - 2011-05-16 21:36 -0700
    Re: Nslookup Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-17 16:50 +1200
      Re: Nslookup Roedy Green <see_website@mindprod.com.invalid> - 2011-05-16 23:02 -0700
        Re: Nslookup Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-17 19:09 +1200
          Re: Nslookup Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-05-17 08:52 +0000
            Re: Nslookup Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-18 13:07 +1200
          Re: Nslookup RedGrittyBrick <RedGrittyBrick@spamweary.invalid> - 2011-05-17 17:48 +0100

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