Linux DNS Client Against Windows 2000 DNS Server

Discussion in 'Linux Networking' started by Daniel Rigal, Jun 14, 2004.

  1. Daniel Rigal

    Daniel Rigal Guest

    Hi everybody,

    How weird is this?

    I installed a Linux server for the company Intranet (SuSE 9.1 Pro) and
    gave it a static IP address. I set up the Linux box to use our Windows
    2000 Active Directory server for its DNS and that is where it gets
    weird. It almost works. DNS works fine as far as external (internet)
    addreses are concerned. They are resolvable and pingable. It is only
    internal addresses which are problematic and even these are only
    partially broken. "nslookup" works fine on an internal address when
    run from the linux box. "host" works fine too. "dig" only works if you
    give it a fully qualified domain name to look up but fails on an
    unqualified one. The really annoying thing is that the command line
    utilities like "ping" can't resolve internal addresses at all, whether
    they are fully qualified or not, which makes life rather difficult.

    Before anybody asks, I don't think I have done anything stupid setting
    it up. There is only one DNS server listed and nsswitch.conf is set up
    to use DNS for host resolution.

    Does anybody have a clue what could be going on? Does anybody else
    have similar issues, or must I have done something silly to mess it
    up? I know that people mistrust the Windows 2000 DNS server but, given
    that "nslookup" and "host" can resolve against it, you would think
    that everything else could too? Do they use different methods to query
    the DNS server?

    Any suggestions for resolving this would be appreciated.


    Daniel Rigal MSc.
    Daniel Rigal, Jun 14, 2004
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  2. That's right - IIRC dig always requires a FQDN.
    I take it that your resolv.conf file is correct. Are your resolver
    libraries OK?
    Gareth Ansell, Jun 15, 2004
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  3. I have, more or less, the same problem. Only I am using WYP Sp1a Which
    doesn't the Windows->Linux problem. But I do have the same problem
    between SuSE 9.1 and SuSE 9.0. I believe it is caused by SuSE 9.1
    using only IPv6 and addressing interfaces by a hardware address
    instead of an interface name. I say this because after having
    installed SuSE 9.1 Pro on another machine the problem no longer exists
    between those two. I am not sure about WY2K, but the problem would
    probably go away if you there would be a IPv6 path.

    (b.t.w. I noticed that I suddenly have another route added (to -> to internal card) which has nothing to do with my
    network; do you have the same?)

    Robert A. Reissaus

    IBM/Informix Consultants fot the BeNeLux
    Robert A. Reissaus, Jun 15, 2004
  4. Daniel Rigal

    Villy Kruse Guest

    If a MSwindows system is configured for DHCP and it can't find a DHCP
    server it will use one of these 169.254 IP addresses selected at random.
    By using the ARP protocol, or something similar, duplicate IP numbers
    are avoided.

    Such addresses are supposed to be used on the local ethernet section only,
    so the route is there to allow your system to communicate with these
    MSwin systems.

    Villy Kruse, Jun 15, 2004
  5. Daniel Rigal

    Daniel Rigal Guest

    Yes, I think so. It is very simple:

    search ourdomain.local

    The IP address is the correct IP of the Windows 2000 DNS and Active
    Directory server. ourdomain.local is the correct name of the DNS/AD

    I added Read access for "everybody" to the ACL for the local DNS
    domain on the Windows 2000 server. That didn't help, even after
    restarting the DNS service.

    nsswitch.conf is set up to resolve hosts through "files dns". Swapping
    it round to "dns files" doesn't make any difference.
    How can I tell? I have not fiddled with them. They are the standard
    ones for SUSE 9.1 (fully patched).


    Daniel Rigal, Jun 16, 2004
  6. Daniel Rigal

    Jan Geertsma Guest

    DNS servers and searchorder should be specified in /etc/resolve.conf
    Jan Geertsma, Jun 16, 2004
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