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AnswerNETSH problem: delete neighbors not persistent

  • Monday, October 19, 2009 3:14 PMalex c Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi there,

    I have a problem with netsh:  I need to remove an address from the neighbors. I use the following command:
    netsh interface ipv4 delete neighbors "Local Area Connection 3" IP_Address MAC_Address

    I type the command and it works, it does not appear when I type:  netsh interface ipv4 show neighbors "Local Area Connection 3"

    The problem is that when I restart the server it reappears in the neighborhoud...any way to remove it permanently?
    Thanks,

     

     

Answers

  • Monday, October 26, 2009 3:42 PMalex c Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    finally found a workaround (although it's not elegant at all).
    -removed the entry with "delete neighbors"
    -deleted the hyper-v virtual internet network (which deleted the "Local area connection" adapter)
    -created a new Hyper-V virtual internal network
    -updated the config of each VM
    -recreated the neighbors entries

    ok well it worked but it would be really nice to understand why this happened...would really not like to do this in a production environment...
     

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  • Monday, October 26, 2009 7:07 AMVincent HuMSFT, ModeratorUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi,

     

    I perform the same test on my computer and it worked properly. After the delete, I run “arp –a” to check, and I can’t find the deleted IP address and the MAC address in the output of “arp –a”.

     

    delete neighbors - Flushes the ARP cache for one or all interfaces.

     

     

    Best Regards,

    Vincent Hu

     

     
  • Monday, October 26, 2009 11:13 AMalex c Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi,
    Yes it does the same to me, but after I restart the server the entry comes back and is displayed as static very weird...don't know if this has something to do with Hyper-V
    Thanks,
     
  • Monday, October 26, 2009 3:42 PMalex c Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    finally found a workaround (although it's not elegant at all).
    -removed the entry with "delete neighbors"
    -deleted the hyper-v virtual internet network (which deleted the "Local area connection" adapter)
    -created a new Hyper-V virtual internal network
    -updated the config of each VM
    -recreated the neighbors entries

    ok well it worked but it would be really nice to understand why this happened...would really not like to do this in a production environment...