DHCP server running Windows Server 2012 or Windows Server 2012 R2 incorrectly offers a reserved IP address

Symptoms

A Windows Server 2012 or Windows Server 2012 R2-based DHCP server may incorrectly offer a reserved IP address on the scope for a computer that has a different MAC address than expected.

Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this update in Windows Server 2012, there are no prerequisites for installing this hotfix.

To apply this update in Windows Server 2012 R2, you must first have update 2919355 installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2012 file information and notesImportant Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    Milestone

    Service branch

    6.2.920 0.17 xxx

    Windows Server 2012

    RTM

    GDR

    6.2.920 0.21 xxx

    Windows Server 2012

    RTM

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8 and Windows Server 2012" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2012

File name

File version

File size

Date

Time

Platform

Dhcpserver.events.xml

Not Applicable

600

06-Jul-2012

20:11

Not Applicable

Dhcpssvc.dll

6.2.9200.17225

1,110,528

07-Jan-2015

06:40

x64

Dhcpserver.events.xml

Not Applicable

600

06-Jul-2012

19:53

Not Applicable

Dhcpssvc.dll

6.2.9200.21342

1,110,528

06-Jan-2015

23:28

x64

Windows Server 2012 R2 file information and notesImportant Windows 8.1 and Windows Server 2012 R2 hotfixes are included in the same packages. However, only "Windows 8.1" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, milestone (RTM,SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17 xxx

    Windows Server 2012 R2

    RTM

    GDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 8.1 and Windows Server 2012 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x64-based versions of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Dhcpserver.events.xml

Not Applicable

600

18-Jun-2013

14:43

Not Applicable

Dhcpssvc.dll

6.3.9600.17627

1,053,184

07-Jan-2015

04:46

x64

Additional file information for Windows Server 2012

Additional files for all supported x64-based versions of Windows Server 2012

File name

Amd64_45f9bec3ff242bd43d9e57c5dbb3a0b9_31bf3856ad364e35_6.2.9200.17225_none_0cae7747c914eb38.manifest

File version

Not Applicable

File size

709

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Amd64_caf80d1dac4bc394158f0a5baea607c8_31bf3856ad364e35_6.2.9200.21342_none_7ed3a4a785756da5.manifest

File version

Not Applicable

File size

709

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Amd64_microsoft-windows-dhcpserverruntime_31bf3856ad364e35_6.2.9200.17225_none_8215482e211da582.manifest

File version

Not Applicable

File size

284,803

Date (UTC)

07-Jan-2015

Time (UTC)

07:54

File name

Amd64_microsoft-windows-dhcpserverruntime_31bf3856ad364e35_6.2.9200.21342_none_828644433a4e3129.manifest

File version

Not Applicable

File size

284,803

Date (UTC)

07-Jan-2015

Time (UTC)

01:51

File name

Package_1_for_kb3022781_bf~31bf3856ad364e35~amd64~~6.2.1.0.mum

File version

Not Applicable

File size

1,783

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Package_1_for_kb3022781~31bf3856ad364e35~amd64~~6.2.1.0.mum

File version

Not Applicable

File size

2,499

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Package_for_kb3022781_rtm_bf~31bf3856ad364e35~amd64~~6.2.1.0.mum

File version

Not Applicable

File size

1,435

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Package_for_kb3022781_rtm~31bf3856ad364e35~amd64~~6.2.1.0.mum

File version

Not Applicable

File size

1,454

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

File name

Update-bf.mum

File version

Not Applicable

File size

1,568

Date (UTC)

08-Jan-2015

Time (UTC)

23:00

Additional file information for Windows Server 2012 R2

Additional files for all supported x64-based versions of Windows Server 2012 R2

File name

Amd64_afdbe90c829acbbb2bd5131d15fd12c4_31bf3856ad364e35_6.3.9600.17628_none_0882d86c67479408.manifest

File version

Not Applicable

File size

709

Date (UTC)

08-Jan-2015

Time (UTC)

19:34

File name

Amd64_microsoft-windows-dhcpserverruntime_31bf3856ad364e35_6.3.9600.17628_none_1a0d094a6b4db6a0.manifest

File version

Not Applicable

File size

291,834

Date (UTC)

08-Jan-2015

Time (UTC)

00:53

File name

Package_1_for_kb3022781~31bf3856ad364e35~amd64~~6.3.2.0.mum

File version

Not Applicable

File size

1,825

Date (UTC)

08-Jan-2015

Time (UTC)

19:34

File name

Package_for_kb3022781_rtm_gm~31bf3856ad364e35~amd64~~6.3.2.0.mum

File version

Not Applicable

File size

1,413

Date (UTC)

08-Jan-2015

Time (UTC)

19:34

File name

Package_for_kb3022781_rtm~31bf3856ad364e35~amd64~~6.3.2.0.mum

File version

Not Applicable

File size

1,459

Date (UTC)

08-Jan-2015

Time (UTC)

19:34


Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about the terminology that Microsoft uses to describe software updates.

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