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Re: stretch and DNS name resolution service for other devices on a LAN

From Pascal Hambourg <pascal@plouf.fr.eu.org>
Newsgroups linux.debian.user
Subject Re: stretch and DNS name resolution service for other devices on a LAN
Date 2018-01-19 21:10 +0100
Message-ID <v9L98-7WN-9@gated-at.bofh.it> (permalink)
References <v9q4G-2Ao-7@gated-at.bofh.it> <v9qem-2FY-7@gated-at.bofh.it> <v9xfP-7vK-1@gated-at.bofh.it>
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Le 19/01/2018 à 06:10, D. R. Evans a écrit :
> Pascal Hambourg wrote on 01/18/2018 02:41 PM:
>>
>> Note : ping is not a proper DNS tool becaus it calls the libc resolver
>> for name resolution, which may use other name sources than DNS. Use dig,
>> host or nslookup instead.
> 
> I admit that I'm quite surprised that everything doesn't use the libc resolver
> (by which I assume you mean the operations performed by gethostbyname() or
> something equivalent). I should look at the code for dig or nslookup sometime
> to see how they resolve names.

DNS tools directly send DNS queries to the specified nameserver. They 
may use the libc resolver only to resolve the nameserver hostname (if 
the nameserver is specified by hostname) or get the nameserver address 
list from /etc/resolv.conf (if a nameserver is not specified).

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Thread

stretch and DNS name resolution service for other devices on a LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-18 22:40 +0100
  Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-18 22:50 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-19 06:20 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-19 21:10 +0100
  Re: stretch and DNS name resolution service for other devices on a  LAN Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-18 22:50 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN "D. R. Evans" <doc.evans@gmail.com> - 2018-01-19 06:20 +0100
    Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 12:50 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN john doe <johndoe65534@mail.com> - 2018-01-19 13:10 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 13:30 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 15:10 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 15:30 +0100
      Re: stretch and DNS name resolution service for other devices on a  LAN Greg Wooledge <wooledg@eeg.ccf.org> - 2018-01-19 14:50 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 15:10 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-19 15:20 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Rob van der Putten <rob@sput.nl> - 2018-01-19 16:20 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Michael Stone <mstone@debian.org> - 2018-01-19 17:40 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-19 20:40 +0100
        Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-19 16:20 +0100
          Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-22 18:30 +0100
            Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-22 23:30 +0100
              Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-23 10:30 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Curt <curty@free.fr> - 2018-01-23 12:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Joe <joe@jretrading.com> - 2018-01-23 14:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-23 15:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Andy Hawkins <andy@gently.org.uk> - 2018-01-23 17:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-01-23 18:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-01-23 21:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-22 23:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-24 10:00 +0100
                Re: stretch and DNS name resolution service for other devices on a   LAN Curt <curty@free.fr> - 2018-02-24 11:10 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-25 18:40 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-27 21:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-28 18:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-02-28 19:50 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-02-28 21:20 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN Pascal Hambourg <pascal@plouf.fr.eu.org> - 2018-03-03 00:00 +0100
                Re: stretch and DNS name resolution service for other devices on a  LAN David Wright <deblis@lionunicorn.co.uk> - 2018-03-04 20:30 +0100

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