Strange errors in my D-Link DI-634M router log today

Discussion in 'Wireless Networking' started by Don Naegele, Jul 23, 2006.

  1. Don Naegele

    Don Naegele Guest


    I have a D-Link DI-634M router.

    While in my log today I noticed tons of errors, but everything is working

    I'm getting this every 3 to 7 seconds from 3 different IP addresses:

    Dropped packet from to that was received from the
    wrong network interface (IP address spoofing)

    The 3 IP addresses are,, and

    A call to D-Link suggested someone was accessing my router such as a
    neighbor. I don't think that's correct. I have WEP encryption set on all my
    devices, with a password none one could guess. I changed my SSID to
    something no one would guess. I have SSID broadcast disabled, and I use MAC
    filtering to only allow devices I've put in the router.

    I did have FIOS TV installed the other day and they installed a Motorola
    NIM100 (Network Interface Module) in my home near the router. I'm new to
    this and can't find a manual for it.

    I'm a bit lost when it comes to it's MAC address and IP stuff. The bottom of
    the NIM100 has a HFC MAC ID that ends in 87 and also says cLINK MAC ID and
    ends in 88. Does this mean it has two MAC addresses? Should I have both in
    my MAC filter list?

    When I added both of those to my MAC filters in my router setup (and
    temporarly disabled MAC filters) I noticed my DHPC server assigned 3 IP's to
    my STBs (Set Top Boxes), so I wrote down those and added them to my MAC
    filters section to be safe and re-enabled MAC filtering.

    After all that stuff everything seemed to work fine. I was NOT seeing any of
    these strange errors in my router log.

    The only reason I even looked in the log yesterday was because our Xbox Live
    connection dropped at noon and I was trying to look for errors in the log. I
    then noticed the new errors.

    So my point is I'm thinking these errors probably don't have anything to do
    with my new NIM100, but i'm not certain. I'm so new to networking that I
    understand VERY little.

    I'm a bit nervous about calling FIOS since they do NOT want people using
    their own routers even though many online say they do just fine.

    I'm so lost and feel that D-Link support was 'blowing me off'. It was
    suggested initially that my network was unsecure and he lead me through
    securing it, to which HE found out it WAS already secure.


    I'm lost.


    p.s. Pardon the multiple posts. I'm not sure what newsgroup to ask for
    help in.
    Don Naegele, Jul 23, 2006
    1. Advertisements

  2. No it isnt. That is just a wi-fi NIC somewhere (yours or someone else's) not
    getting an IP asigned but nevertheless connecting to your wireless signal if
    not your actual internet or network.
    It IS possibly correct but it can be one of your own wi-fi NICs too.
    Diamontina Cocktail, Jul 23, 2006
    1. Advertisements

  3. Don Naegele

    Don Naegele Guest


    Just to clarify, it HAS to be a wireless device causing the problem, or
    could it be a wired connected device causing the problem?

    Don Naegele, Jul 23, 2006
  4. Don Naegele

    Dave Guest

    without more info it could be anything connected to your network either
    wired or wireless. are all 3 of them sending to the network broadcast
    address (.255)?? that block of numbers should not be routable on the
    internet, so it has to be local to your network. that block is also what
    windows (and other) machines randomly pick from when they can't get an
    address via dhcp, so its likely a machine trying to get an ip address and
    failing. what ip range does your router serve? which interface does the
    router say these are coming in from?? have you tried unplugging or turning
    off each of your devices to see if they go away?

    by the way, as long as your network is active the ssid will be visible to
    anyone monitoring. turning off broadcasting just keeps it from being sent
    when there is no network traffic.
    Dave, Jul 23, 2006
  5. Don Naegele

    Don Naegele Guest


    I have my DHCP IP Address Range set from to .99. Is that what
    you're talking about? I'm so lost on this stuff.

    I'm not sure what you mean by 'which interface does the router say these are
    coming from'. This is all I get from the log:

    [INFO] Sun Jul 23 15:38:49 2006 Dropped packet from to that was received from the wrong network interface (IP address

    I've not tried unplugging or turning off each device one at a time, but
    that's a good idea. Thanks for the suggestion.

    Don Naegele, Jul 23, 2006
  6. Don Naegele

    Don Naegele Guest

    Hi again.

    Just for fun I unplugged the new NIM100 and rebooted the router. The error
    messages stopped.

    I then plugged in the NIM100 and the error messages started again.

    So it has something to do with my new NIM100. I cannot find any manual on
    it online anywhere.

    I have a feeling calling Verizon to ask what the error message is for is
    going to result in them commenting that I need to use their VDI-624 crappy
    router that messes up our Xbox connection and is slow.


    Don Naegele, Jul 23, 2006
  7. Don Naegele

    Dave Guest

    i have no idea what that is, but keep looking, there must be something for
    it. meanwhile, what it would sound like is that its trying to find
    something in the right ip address range to talk to. when you send to .255
    that is considered a broadcast for that 169.254.1.* address block. that is
    the type of thing devices that need to phone home for configuration
    information, but don't know the address do. so maybe there was a
    configuration step you missed, or something else that needed to be installed
    for it to talk to.

    Dave, Jul 23, 2006
  8. No it HAS to be wireless.

    Diamontina Cocktail, Jul 24, 2006
  9. Sorry but no it couldn't be wired.
    Diamontina Cocktail, Jul 24, 2006
  10. Just to clarify, this can NOT in ANY way, be a WIRED NIC in your case, only
    wireless or wi-fi if you like.

    There is a NIC in range somewhere that is connecting to your SSID on your
    router but not to Internet or your network. It is NOT being supplied with an
    IP number from your DHCP server (assuming you have one turned on) and is
    thus giving itself a standard number for a wi-fi NIC that isn't being
    supplied a number.

    There is one simple way to check which NIC is causing it. You know which
    ones are working getting internet or your network so discount all of those
    at first. Now look at the ones that are left. Close any log report you may
    be viewing now go to one of those wi-fi NICs you think AREN'T connected (did
    you say Playstation or something like that before? In any case, one of
    those) and turn it completely off so that it cant attempt to connect to
    anything. Go back to your logs and see if it is still attempting to connect.
    If not, then that was the problem and if more connect attempts are coming
    in, shut down the log viewing you have up, go to the next one while leaving
    the first off, turn IT off and come back and open the logs again. Is it
    fixed? Do this for every wi-fi device you have in range that you KNOW isn't
    connected. One thing to remember is that some routers don't do anything more
    than fill up the log page and don't put anything newer in the logs. If this
    is the case with yours, you may have to clear the logs after looking at them
    so more lines can be written.

    Another much simpler alternative is to go to where "DHCP" is in your router
    and turn it ON if it is currently off (which it sounds like it is) and see
    if the problem resolves itself. This DOES mean, though, that if someone
    outside your premises is trying to connect to you, they will if they know
    the WEP key or whatever you have set up for encryption.

    Did you manually assign IP and DNS to your computers that are OK on your
    router? If so, another way to fix this is to go to those kiddy consoles you
    mentioned and assign an IP to them within the range the router allows and of
    course set up encryption. If the problem goes away, you have fixed it.

    Other than that, if you are not seeing a connect by the other IP numbers,
    why is it a problem? They aren't actually doing anything of note if they
    cant connect.
    Diamontina Cocktail, Jul 24, 2006
  11. Don Naegele

    Don Naegele Guest


    Why does pulling the WIRED Motorola NIM100 from the system stop all errors

    I'm so lost.

    Everyone is saying it must a wireless device causing the problem.

    Is it possible that when I reconnect the NIM100 then the THREE Set Top Boxes
    are causing the problem? They are not 'hard wired' into my router, but one
    STB is connected COAX to the NIM100. And I'm get three errors with three IP
    addresses in the errors.

    Maybe I should disconnect all 3 STBS's one at a time and reboot and see if
    connecting them one at a time starting errors coming in one at a time?



    Don Naegele, Jul 24, 2006
  12. Don Naegele

    Don Naegele Guest

    Hi again.

    I did some testing.

    I kept the NIM100 connected, but then disconnected all 3 STBs. No errors.

    I then reconnected the first STB and was getting one error with an IP ending
    in .82.

    I then reconnected the second STB and was getting two errors. The first
    with .82 and now the 2nd adds .146.

    I then reconnected the third STB and was getting three errors. This adds
    ..188 to my list of error IPs.

    So it appears that the STBs are causing the errors.

    I have alreading included the STBs in my MAC filter, and I have also
    assigned all 3 STBs their own IP address in my DHCP Reservation List.

    Any further suggestions?


    Don Naegele, Jul 24, 2006
  13. Don Naegele

    Dave Guest

    the 169... ip address means they are not getting addresses from your dhcp
    server and are picking those numbers for themselves. the router complains
    because those are not in the range of addresses it is expecting. so you
    have to figure out how to configure your router, the nim100 (whatever that
    is), or the stb's (whatever they may be), or all 3, in such a way that they
    all get proper ip addresses.

    Dave, Jul 25, 2006
  14. Don Naegele

    Don Naegele Guest

    Yeah. I'll need lots of luck then.

    Thanks for all your help, though.


    Don Naegele, Jul 25, 2006
  15. Don Naegele


    Nov 19, 2008
    Likes Received:
    I believe this explains it:

    well I tried to post the link, but appartently I have to have at least 25 posts.

    That's stupid. I see if I can cut it up.

    AWEInCA, Nov 19, 2008
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.