I can`t remember anything, so I’m recording

MS DHCP. The specified address is not available.

specified ip address is not available

Do not believe your eyes If you are Microsoft Windows admin!


PS C:\Windows\system32> Add-DhcpServerv4reservation -ScopeId -IPAddress

Командлет Add-DhcpServerv4Reservation в конвейере команд в позиции 1
Укажите значения для следующих параметров:
ClientId: 10-e7-c6-e5-4b-ce
Add-DhcpServerv4reservation : Не удалось зарезервировать IP-адрес для ClientID/ClientDUID 10-e7-c6-e5-4b
-ce в области на DHCP-сервере MS-DHCP-001.
строка:1 знак:1
+ Add-DhcpServerv4reservation -ScopeId -IPAddress
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ResourceUnavailable: (…erv4Reservation) [Add-DhcpServerv
   4Reservation], CimException
    + FullyQualifiedErrorId : DHCP 20011,Add-DhcpServerv4Reservation


netsh dhcp server initiate reconcile is not working! Have to check dump and real state:

1. netsh dhcp server dump > c:\dump


3. DELETE Reserved IP even if you see not this PROBLEM MAC-address from DHCP



Do not believe your eyes!

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