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How to disable autoconfiguration IPv4 ?

    Question

  • Ethernet adapter Local AreaConnection 2:

       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection #
    2
       Physical Address. . . . . . . . . : 00-50-56-B3-22-34
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 82.179.190.12(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.255.128
       Default Gateway . . . . . . . . . :
       DNS Servers . . . . . . . . . . . : 127.0.0.1
       Primary WINS Server . . . . . . . : 127.0.0.1
       NetBIOS over Tcpip. . . . . . . . : Enabled

    ---------

     

     

    The problem is that my static IP is constantly replacing with "autoconfiguration". Ipconfig output says "Autoconfiguration Enabled . . . . : Yes"

     

    Question: How do I disable, turn off the "Autoconfiguration" ?

    ps. IP address is statically configured.

    Tuesday, November 23, 2010 12:56 PM

Answers

  • Hello,

    the Autoconfiguration belongs to APIPA which is only used if a DHCP server is not available(if enabled) or NO fixed ip address is configured, which you did.

    So what problem do you have if it is enabled? Anyway, check this option:

    This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.

    Disable APIPA on All but One Network Adapter

    1. Use Registry Editor to create the following registry key, where <var>adapter name</var> is the name of the Dynamic Host Configuration Protocol (DHCP) configured adapter where you want to disable APIPA:
      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Services\Tcpip\Parameters\Interfaces\<var>adapter name</var>
    2. Add the following value to this key:
      Value name: IPAutoconfigurationEnabled
      Value type: REG_DWORD
      Value in hexadecimal: 0 (A value of 0 disables APIPA support on this adapter)
      NOTE: If the IPAutoconfigurationEnabled entry is not present, a default value of 1 is assumed, which indicates that APIPA is enabled.
    3. After you make this change, restart your computer.

    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
    • Marked as answer by Tiger Li Wednesday, November 24, 2010 7:37 AM
    Tuesday, November 23, 2010 1:07 PM

All replies

  • Hello,

    the Autoconfiguration belongs to APIPA which is only used if a DHCP server is not available(if enabled) or NO fixed ip address is configured, which you did.

    So what problem do you have if it is enabled? Anyway, check this option:

    This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.

    Disable APIPA on All but One Network Adapter

    1. Use Registry Editor to create the following registry key, where <var>adapter name</var> is the name of the Dynamic Host Configuration Protocol (DHCP) configured adapter where you want to disable APIPA:
      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Services\Tcpip\Parameters\Interfaces\<var>adapter name</var>
    2. Add the following value to this key:
      Value name: IPAutoconfigurationEnabled
      Value type: REG_DWORD
      Value in hexadecimal: 0 (A value of 0 disables APIPA support on this adapter)
      NOTE: If the IPAutoconfigurationEnabled entry is not present, a default value of 1 is assumed, which indicates that APIPA is enabled.
    3. After you make this change, restart your computer.

    Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.
    • Marked as answer by Tiger Li Wednesday, November 24, 2010 7:37 AM
    Tuesday, November 23, 2010 1:07 PM
  •  
     Connection-specific DNS Suffix  . :
     Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Net

     Physical Address. . . . . . . . . : 00-50-56-B3-01-C1
     DHCP Enabled. . . . . . . . . . . : No
     Autoconfiguration Enabled . . . . : Yes
     IPv4 Address. . . . . . . . . . . : 10.10.0.2(Preferred)
     Subnet Mask . . . . . . . . . . . : 255.255.0.0
     Default Gateway . . . . . . . . . :
     DNS Servers . . . . . . . . . . . : 127.0.0.1
     NetBIOS over Tcpip. . . . . . . . : Enabled

    After i've done this,  should i get   Autoconfiguration Enabled . . . . : Yes  ?


    Tuesday, November 23, 2010 2:27 PM
  • Hello,

    How to know my adapter name??

    ty

    Tuesday, August 14, 2012 6:42 AM
  • In case someone else runs across this...the problem might not be that Autoconfiguration is enabled, but that the assigned IP address is in use.  I had the same issue & tried the registry key, but still couldn't ping my gateway - but sure enough checked in DNS & the IP assigned by VMM was in use and was being actively used.  Found an old IP that was free, set that as the server's IP address and the server's working just fine now.

    • Proposed as answer by R Oliver Tuesday, May 14, 2013 12:08 PM
    Monday, April 22, 2013 5:35 PM
  • i try these steps but still not working on my server 2008 r2 still its shows Autoconfiguration Enabled . . . . : Yes

    please help me


    paul

    • Proposed as answer by paul0003 Tuesday, July 09, 2013 5:56 AM
    • Unproposed as answer by paul0003 Tuesday, July 09, 2013 5:56 AM
    Tuesday, July 09, 2013 5:54 AM