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The DNS Server service may start without a valid IP address in Windows Server 2008 R2 if you configure the computer to use a dynamic IP addressArticle ID: 2028666 - View products that this article applies to. On This PageSYMPTOMSConsider the following scenario:
CAUSEThis issue occurs because of a timing issue between the DNS Server service and the DHCP client. Upon start, by default, the DHCP client tries to verify whether the previously assigned lease is still valid. In the above described scenario however, it cannot reach the DHCP server, therefore it takes more time to keep the previously used IP Address. If the DNS service starts while the DHCP client is still validating, it will not find a valid IPv4 address to bind to. Also, The DNS Server service registers for IP address change notifications to make sure that the service is informed of IP address changes, for example if the DHCP client service decides to keep the previous IPv4 IP address. However, the DNS Server service does not receive the notification if the computer receives an IP address in a certain time period. This certain time period is between when the service starts and when the service begins to listen for the IP address change notification. Therefore, the DNS Server service does not start by using a valid IP address if the computer receives the IP address in this certain time period. RESOLUTIONHotfix informationA supported hotfix is available from Microsoft. 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, visit the following Microsoft Web site: http://support.microsoft.com/contactus/?ws=support Note 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.
(http://support.microsoft.com/contactus/?ws=support)
PrerequisitesTo apply this hotfix, you must be running Windows Server 2008 R2. Additionally, you must have the DNS server role installed.Registry informationTo use the hotfix, you do not have to change the registry.Restart requirementYou may have to restart the computer after you apply this hotfix.Note If you stop the DNS Server service before you install this hotfix, you do not have to restart the computer. Hotfix replacement informationThis hotfix does not replace a previously released hotfix.File informationThe global 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 2008 R2 file information notesImportant Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
For all supported x64-based versions of Windows Server 2008 R2Collapse this table
WORKAROUNDTo work around this issue, configure the DNS server to use a static IP address. STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. MORE INFORMATION
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684
(http://support.microsoft.com/kb/824684/
)
Description of the standard terminology that is used to describe Microsoft software updates
Additional file informationAdditional file information for Windows Server 2008 R2Additional files for all supported x64-based versions of Windows Server 2008 R2Collapse this table
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