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You are here: Home / Operating System / “the specified address is not available” DHCP Reservations fails

Jan 16, 2015 By Jared Heinrichs 1 Comment

“the specified address is not available” DHCP Reservations fails

On the DHCP server run this command:

1. Run: netsh dhcp server dump > c:\\texfile.txt
2. Searched text file created for MAC causing the problem which showed MAC related to another reservation although correct MAC was showing in DHCP admin.
3. Deleted and re-created reservation with correct values
4. Was then able to use MAC address for the problem reservation

If the MAC does not show in the dump file created

1. Run netsh dhcp server scope SCOPENAME initiate reconcile, which showed one inconsistent IP address that does not show in DHCP Admin GUI
2. Assumed this to be the erroneous entry and run netsh dhcp server scope SCOPENAME delete reservedip RESERVEDIP erroneousMAC (erroneousMAC=MAC unable to add) which completed successfully freeing the MAC address for use
3. Added new reservation

Filed Under: Operating System

Comments

  1. Shawn says

    Feb 5, 2016 at 12:22 pm

    This does not work for ip6 ones, do you know the best solution for those?

    netsh dhcp server v6 scope SCOPENAME delete reservedip RESERVEDIP

    Thats assuming to be the correct command?

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