One network card but two IP'S ?

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  1. Posts : 2,298
    Windows 7 Professional x64 SP1 ; Windows Server 2012 R2 Standard
       #11

    Hmm, most bizarre... Both addresses are coming from your ethernet controller. Do you have any virtualisation software running at all since they can cause multiple addresses to one MAC?

    Also, your tunnel adapter which is used to tunnel IPv6 over IPv4 may have required an IPv4 address which is most likely where this has come from.

    Can you run the following program below to reset your TCP/IP settings and hopefully reset the tunnel adapter to see if that is the cause.

    Please reboot the router as well in order to flush the DHCP table and get accurate results.

       Note
    Your machine will reboot after it has completed!


    Hope This Helps,
    Josh :)
    One network card but two IP'S ? Attached Files
      My Computer


  2. Posts : 40
    Windows 7 Home Premium
    Thread Starter
       #12

    Hi Josh,
    Done that and, as you can see, no luck. Although the lease time for all devices are now the same which shows me I carried out the method correctly (at least this time it's not operator error .
    Earlier you mentioned a process to remove the IPv6 address. Is that still possible ? If so, I'll try it.
    Thanks for your help.
    Nelly

    One network card but two IP'S ?-dhcp.png
      My Computer


  3. Posts : 2,298
    Windows 7 Professional x64 SP1 ; Windows Server 2012 R2 Standard
       #13

    To remove the tunnel interfaces please open an Elevated Command Prompt and type the following - Elevated Command Prompt:

    Code:
    netsh interface ipv6 isatap set state disabled
    Press enter and then input the following:

    Code:
    netsh interface ipv6 teredo set state disabled
    This should disable the tunnel interfaces.

    Please then reboot the machine and router to clear any DHCP tables

    Josh
      My Computer


  4. Posts : 40
    Windows 7 Home Premium
    Thread Starter
       #14

    Hi Josh,
    Sorry for delay in answering, got things on at home. I did that (see below)
    Thanks, Nelly

    One network card but two IP'S ?-dhcp-cmd.png

    p.s. When I entered the second netsh command I received the message :
    the following command was not found : interface ipv6 teredo set state disabled.
      My Computer


  5. Posts : 2,298
    Windows 7 Professional x64 SP1 ; Windows Server 2012 R2 Standard
       #15

    My apologies the first part needs to be entered serperately:

    technet said:
    To Turn Off Teredo by Using the Netsh Command in Windows Vista
    To open a command prompt as an administrator, click Start, click All Programs, click Accessories, right-click Command Prompt, and click Run as administrator.
    If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
    At the command prompt, type the following lines (press ENTER after each line):
    netsh
    interface
    teredo

    At the netsh interface teredo command prompt, type:
    set state disabled
    More information - Internet Protocol Version 6, Teredo, and Related Technologies in Windows Vista
      My Computer


  6. Posts : 40
    Windows 7 Home Premium
    Thread Starter
       #16

    Thanks for the link :apology not necessary. You've been so helpful.
    I'm going to work on this more tomorrow. Thanks again, Nelly
      My Computer


  7. Posts : 2,298
    Windows 7 Professional x64 SP1 ; Windows Server 2012 R2 Standard
       #17

    No worries, take your time :) I hope this is the cause otherwise we may be looking at a different issue here

    Josh!
      My Computer


 
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