DHCP Server Leasing Addresses to MAC Addresses of 00-00-00-00-00-00

Discussion in 'Linux Networking' started by Guest, Dec 5, 2006.

  1. Guest

    Guest Guest

    I'm using a Draytek DSL Modem/Router which is acting as a DHCP server.
    connection to Server 2003 with a dual-NIC setup for hosting XP clients.
    I also have Server 2003 as a DHCP server for a specific subnet of XP
    clients that are internal to the business. I also have separate
    connections from the modem/router that go to a Linux box and still more
    connections to external client computers. Now when I connect the
    client computers I'd like the DHCP server to lease them an address but
    as you can see in the following log, the server gives out every
    available lease after a short amount of time. In order to clear the
    active DHCP sessions I have to reboot the server; then I can lease an
    address to a client computer (as you can see by the second leased
    address with the Host ID. After a few hours though the list looks like

    Any ideas on what's going on?

    Any ideas on maybe a better group to post this to?

    DHCP server: Running
    Index IP Address MAC Address Leased Time HOST ID
    1 00-50-75-1E-63-60 ROUTER IP
    2 00-15-F3-9B-FA-34 0:13:57.340 Client-Desktop
    3 00-00-00-00-00-00 0:20:40.390
    4 00-00-00-00-00-00 0:20:40.440
    5 00-00-00-00-00-00 0:20:42.380
    6 00-00-00-00-00-00 0:20:42.430
    7 00-00-00-00-00-00 1:20:44.520
    8 00-00-00-00-00-00 1:20:44.570
    9 00-00-00-00-00-00 1:20:46.500
    10 00-00-00-00-00-00 1:20:46.550
    11 00-00-00-00-00-00 2:20:48.390
    12 00-00-00-00-00-00 2:20:48.440
    13 00-00-00-00-00-00 2:20:50.390
    14 00-00-00-00-00-00 2:20:50.440
    15 00-00-00-00-00-00 3:20:52.380
    16 00-00-00-00-00-00 3:20:52.430
    17 00-00-00-00-00-00 3:20:54.380
    18 00-00-00-00-00-00 3:20:54.430
    19 00-00-00-00-00-00 4:20:56.400
    20 00-00-00-00-00-00 4:20:56.450
    21 00-00-00-00-00-00 4:20:58.410
    Guest, Dec 5, 2006
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  2. Dunno, though it doesn't sound like a Linux problem at all, even
    if it isn't clear what "Server 2003" is supposed to be?
    Suggestion, use something that is known to work, like isc DHCP
    server on Linux.

    Good luck
    Michael Heiming, Dec 5, 2006
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  3. Guest

    Guest Guest

    It's not a Linux problem... I just use Linux primarily on my main
    workstation and I failed to find a group that was specific to hardware
    and router/modem issues. Server 2003 is Windows Server 2003.
    Guest, Dec 5, 2006
  4. Guest

    Lew Pitcher Guest

    Since you admit that this is not a Linux problem, and your problem
    description seems to indicate that this is a problem specific to the
    DCHP server running on a Microsoft Windows Server 2003, your best bet
    would be to ask your question in one of the comp.os.ms-windows

    Here, in comp.os.LINUX.networking, we tend to discuss networking issues
    with Linux, and really can't help you with what looks to be a Windows
    2003 issue.

    Lew Pitcher, Dec 5, 2006
  5. Guest

    Guest Guest

    No no no, I'll clarify that this is not an issue with Windows Server
    2003. That is a separate DHCP server for only the domain clients on a
    different address block and subnet. The DHCP server that is having the
    problem is built into the modem/router/gateway for communicating with
    the internet. I really don't know what newsgroup that would fit into...
    but I'm guessing that it's running linux so this seems like a good
    Guest, Dec 5, 2006
  6. [ Problems with above box builtin dhcp server, a Linux problem? ]
    So you are guessing the above mentioned Draytek DSL Modem/Router
    is running Linux and this entitles you for at least "gold"
    support from this newsgroup? ;-))

    However it sounds unlikely, though I'd firstly check the manual
    for any hints, vendors homepage, updates which might resolve the
    problem, troubleshooting guide, vendor forum for problems and

    Using google for what it was intended to do would be another idea
    and likely more successful then insisting on help from people
    reading comp.os.linux.networking!
    Michael Heiming, Dec 5, 2006
  7. Guest

    Guest Guest

    lol... believe me I tried searching Google first. I rarely ask a
    question until I've exhausted my other resources. I've went years
    without having this problem but it wasn't until recently that it
    started. I thought that maybe someone would happen to know... but I
    guess it's not as common as I might have thought. Not a big deal...
    but would you feel better if I had just said that all the computers
    hooked to the modem/router were linux and not just a few?
    Guest, Dec 5, 2006
  8. [ broken quoting fixed, your 80m alias does indeed make things
    look worse. ]

    [ .. if groups.google could just remove .sig from replies? ]
    And the other things I suggested, it seems these days many people
    start searching instead of checking the obvious first.
    You still don't get it, it doesn't matter if you have +2000 M$
    boxes, as long as the server runs Linux in this case dhcpd, for
    the simple reason people in a LINUX newsgroup, if you know what
    this is? Know how to troubleshoot problems on LINUX!

    So please try the suggestions above and please stop this wild
    Michael Heiming, Dec 5, 2006
  9. Guest

    Guest Guest

    Hey, never meant to offend you. I always felt the the linux community
    was very knowledgeable and I was simply looking for a little help.
    Most people that know linux also know hardware and understand stuff
    like iptables and therefore would understand a simple DHCP question.
    As I told you I've searched high and low already. Wild guessing - not
    sure what you mean... I just have respect for the linux community. I'm
    sorry you acted this way and feel like this... thanks for cutting me
    off from your vine.
    Guest, Dec 5, 2006
  10. In comp.os.linux.networking

    Good riddance
    Michael Heiming, Dec 5, 2006
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