FIX: DHCP server cannot allocate IP address on a Windows Embedded Compact 7-based device

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This article describes an issue that occurs when you enable two NDIS adapters and then bind to a DHCP server on a Windows Embedded Compact 7-based device. Before you install the update in the "Resolutions" section, all previously issued updates for this product must be installed.

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Symptoms

Assume that you have a Windows Embedded Compact 7-based device that uses Internet Connection Sharing. When you enable two Network Driver Interface Specification (NDIS) adapters and then bind to a DHCP server on the device, the DHCP server cannot allocate an IP address.

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Resolution

Download information

The Windows Embedded Compact 7 Monthly Update (October 2014) is now available from Microsoft. To download this Windows Embedded Compact 7 monthly update, go to the following Microsoft Download Center website:

Windows Embedded Compact 7 updates

The kind of processor that each file applies to is visible in the name of each file in the "File information" section.

Registry information

After you apply this update, the following registry key is added to turn off the SendArp probe:

[HKEY_LOCAL_MACHINE\Comm\ConnectionSharing] 
"DhcpAllocSendArpProbeOff"=dword:0

When the dword value is 0, the SendArp probe is turned on. In this situation, DHCP Allocator checks whether the offered network address is already being used during allocation of a new address.

When the dword value is 1, the SendArp probe is turned off. In this situation, DHCP Allocator disables probes of newly allocated addresses and lets the DHCP client-side detect the duplicate IP address.

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More Information

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

On the Build menu, click Clean Solution, and then click Build Solution.
On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Files that are included in this hotfix package

File name	File size	Date	Time	Path
Ipnat.dll	122,880	27-Oct-2014	10:10	Public\Common\Oak\Target\X86\Retail
Ipnat.map	88,584	27-Oct-2014	10:10	Public\Common\Oak\Target\X86\Retail
Ipnat.rel	50,140	27-Oct-2014	10:10	Public\Common\Oak\Target\X86\Retail
Ipnat.dll	368,640	27-Oct-2014	12:13	Public\Common\Oak\Target\X86\Debug
Ipnat.map	261,122	27-Oct-2014	12:13	Public\Common\Oak\Target\X86\Debug
Ipnat.rel	158,368	27-Oct-2014	12:13	Public\Common\Oak\Target\X86\Debug
Ipnat.dll	299,008	27-Oct-2014	10:11	Public\Common\Oak\Target\X86\Checked
Ipnat.map	249,755	27-Oct-2014	10:11	Public\Common\Oak\Target\X86\Checked
Ipnat.rel	141,635	27-Oct-2014	10:11	Public\Common\Oak\Target\X86\Checked
Ipnat.dll	159,744	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv5\Retail
Ipnat.map	88,748	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv5\Retail
Ipnat.rel	44,050	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv5\Retail
Ipnat.dll	512,000	27-Oct-2014	12:04	Public\Common\Oak\Target\Armv5\Debug
Ipnat.map	265,348	27-Oct-2014	12:04	Public\Common\Oak\Target\Armv5\Debug
Ipnat.rel	118,087	27-Oct-2014	12:04	Public\Common\Oak\Target\Armv5\Debug
Ipnat.dll	372,736	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv5\Checked
Ipnat.map	250,593	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv5\Checked
Ipnat.rel	114,462	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv5\Checked
Ipnat.dll	159,744	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Retail
Ipnat.map	88,748	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Retail
Ipnat.rel	44,050	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Retail
Ipnat.dll	512,000	27-Oct-2014	12:06	Public\Common\Oak\Target\Armv6\Debug
Ipnat.map	265,348	27-Oct-2014	12:06	Public\Common\Oak\Target\Armv6\Debug
Ipnat.rel	118,087	27-Oct-2014	12:06	Public\Common\Oak\Target\Armv6\Debug
Ipnat.dll	368,640	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Checked
Ipnat.map	250,592	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Checked
Ipnat.rel	114,433	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv6\Checked
Ipnat.dll	159,744	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv7\Retail
Ipnat.map	88,665	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv7\Retail
Ipnat.rel	44,021	27-Oct-2014	10:11	Public\Common\Oak\Target\Armv7\Retail
Ipnat.dll	507,904	27-Oct-2014	12:07	Public\Common\Oak\Target\Armv7\Debug
Ipnat.map	265,346	27-Oct-2014	12:07	Public\Common\Oak\Target\Armv7\Debug
Ipnat.rel	118,116	27-Oct-2014	12:07	Public\Common\Oak\Target\Armv7\Debug
Ipnat.dll	368,640	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv7\Checked
Ipnat.map	250,512	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv7\Checked
Ipnat.rel	114,404	27-Oct-2014	10:12	Public\Common\Oak\Target\Armv7\Checked
Ipnat.dll	200,704	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Retail
Ipnat.map	85,789	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Retail
Ipnat.rel	170,432	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Retail
Ipnat.dll	569,344	27-Oct-2014	12:10	Public\Common\Oak\Target\Mipsii\Debug
Ipnat.map	261,867	27-Oct-2014	12:10	Public\Common\Oak\Target\Mipsii\Debug
Ipnat.rel	518,983	27-Oct-2014	12:10	Public\Common\Oak\Target\Mipsii\Debug
Ipnat.dll	454,656	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Checked
Ipnat.map	247,574	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Checked
Ipnat.rel	439,349	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii\Checked
Ipnat.dll	200,704	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Retail
Ipnat.map	85,789	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Retail
Ipnat.rel	170,432	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Retail
Ipnat.dll	569,344	27-Oct-2014	12:11	Public\Common\Oak\Target\Mipsii_fp\Debug
Ipnat.map	261,701	27-Oct-2014	12:11	Public\Common\Oak\Target\Mipsii_fp\Debug
Ipnat.rel	518,896	27-Oct-2014	12:11	Public\Common\Oak\Target\Mipsii_fp\Debug
Ipnat.dll	454,656	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Checked
Ipnat.map	247,406	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Checked
Ipnat.rel	439,262	27-Oct-2014	10:11	Public\Common\Oak\Target\Mipsii_fp\Checked
Ipnat.dll	147,456	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Retail
Ipnat.map	89,301	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Retail
Ipnat.rel	90,305	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Retail
Ipnat.dll	405,504	27-Oct-2014	12:11	Public\Common\Oak\Target\Sh4\Debug
Ipnat.map	265,847	27-Oct-2014	12:11	Public\Common\Oak\Target\Sh4\Debug
Ipnat.rel	212,453	27-Oct-2014	12:11	Public\Common\Oak\Target\Sh4\Debug
Ipnat.dll	327,680	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Checked
Ipnat.map	250,971	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Checked
Ipnat.rel	190,877	27-Oct-2014	10:11	Public\Common\Oak\Target\Sh4\Checked
Dhcpallo.lib	441,152	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Retail
Natlib.lib	673,348	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Retail
Natwdm.lib	102,732	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Retail
Ipnat.lib	3,210	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Retail
Ipnat.exp	1,699	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Retail
Dhcpallo.lib	687,324	27-Oct-2014	12:12	Public\Common\Oak\Lib\X86\Debug
Natlib.lib	848,546	27-Oct-2014	12:12	Public\Common\Oak\Lib\X86\Debug
Natwdm.lib	108,910	27-Oct-2014	12:12	Public\Common\Oak\Lib\X86\Debug
Ipnat.lib	3,210	27-Oct-2014	12:13	Public\Common\Oak\Lib\X86\Debug
Ipnat.exp	1,699	27-Oct-2014	12:13	Public\Common\Oak\Lib\X86\Debug
Dhcpallo.lib	684,194	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Checked
Natlib.lib	862,108	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Checked
Natwdm.lib	100,614	27-Oct-2014	10:10	Public\Common\Oak\Lib\X86\Checked
Ipnat.lib	3,210	27-Oct-2014	10:11	Public\Common\Oak\Lib\X86\Checked
Ipnat.exp	1,699	27-Oct-2014	10:11	Public\Common\Oak\Lib\X86\Checked
Dhcpallo.lib	483,756	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv5\Retail
Natlib.lib	778,642	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv5\Retail
Natwdm.lib	111,934	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv5\Retail
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv5\Retail
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv5\Retail
Dhcpallo.lib	793,108	27-Oct-2014	12:03	Public\Common\Oak\Lib\Armv5\Debug
Natlib.lib	1,081,892	27-Oct-2014	12:03	Public\Common\Oak\Lib\Armv5\Debug
Natwdm.lib	130,948	27-Oct-2014	12:03	Public\Common\Oak\Lib\Armv5\Debug
Ipnat.lib	3,162	27-Oct-2014	12:03	Public\Common\Oak\Lib\Armv5\Debug
Ipnat.exp	1,647	27-Oct-2014	12:03	Public\Common\Oak\Lib\Armv5\Debug
Dhcpallo.lib	764,272	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv5\Checked
Natlib.lib	1,048,190	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv5\Checked
Natwdm.lib	108,010	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv5\Checked
Ipnat.lib	3,162	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv5\Checked
Ipnat.exp	1,647	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv5\Checked
Dhcpallo.lib	483,844	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv6\Retail
Natlib.lib	776,778	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv6\Retail
Natwdm.lib	111,966	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv6\Retail
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv6\Retail
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv6\Retail
Dhcpallo.lib	793,164	27-Oct-2014	12:05	Public\Common\Oak\Lib\Armv6\Debug
Natlib.lib	1,079,012	27-Oct-2014	12:05	Public\Common\Oak\Lib\Armv6\Debug
Natwdm.lib	130,980	27-Oct-2014	12:05	Public\Common\Oak\Lib\Armv6\Debug
Ipnat.lib	3,162	27-Oct-2014	12:06	Public\Common\Oak\Lib\Armv6\Debug
Ipnat.exp	1,647	27-Oct-2014	12:06	Public\Common\Oak\Lib\Armv6\Debug
Dhcpallo.lib	764,360	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv6\Checked
Natlib.lib	1,046,284	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv6\Checked
Natwdm.lib	108,042	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv6\Checked
Ipnat.lib	3,162	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv6\Checked
Ipnat.exp	1,647	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv6\Checked
Dhcpallo.lib	483,166	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv7\Retail
Natlib.lib	774,448	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv7\Retail
Natwdm.lib	111,942	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv7\Retail
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv7\Retail
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Armv7\Retail
Dhcpallo.lib	791,706	27-Oct-2014	12:07	Public\Common\Oak\Lib\Armv7\Debug
Natlib.lib	1,075,868	27-Oct-2014	12:07	Public\Common\Oak\Lib\Armv7\Debug
Natwdm.lib	130,920	27-Oct-2014	12:07	Public\Common\Oak\Lib\Armv7\Debug
Ipnat.lib	3,162	27-Oct-2014	12:07	Public\Common\Oak\Lib\Armv7\Debug
Ipnat.exp	1,647	27-Oct-2014	12:07	Public\Common\Oak\Lib\Armv7\Debug
Dhcpallo.lib	761,482	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv7\Checked
Natlib.lib	1,039,344	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv7\Checked
Natwdm.lib	108,010	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv7\Checked
Ipnat.lib	3,162	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv7\Checked
Ipnat.exp	1,647	27-Oct-2014	10:12	Public\Common\Oak\Lib\Armv7\Checked
Dhcpallo.lib	471,542	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Retail
Natlib.lib	738,868	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Retail
Natwdm.lib	106,750	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Retail
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Retail
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Retail
Dhcpallo.lib	769,414	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii\Debug
Natlib.lib	1,018,216	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii\Debug
Natwdm.lib	123,398	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii\Debug
Ipnat.lib	3,162	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii\Debug
Ipnat.exp	1,647	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii\Debug
Dhcpallo.lib	731,592	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Checked
Natlib.lib	967,500	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Checked
Natwdm.lib	104,388	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Checked
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Checked
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii\Checked
Dhcpallo.lib	472,202	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Retail
Natlib.lib	739,668	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Retail
Natwdm.lib	107,016	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Retail
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Retail
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Retail
Dhcpallo.lib	770,074	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii_fp\Debug
Natlib.lib	1,018,964	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii_fp\Debug
Natwdm.lib	123,642	27-Oct-2014	12:10	Public\Common\Oak\Lib\Mipsii_fp\Debug
Ipnat.lib	3,162	27-Oct-2014	12:11	Public\Common\Oak\Lib\Mipsii_fp\Debug
Ipnat.exp	1,647	27-Oct-2014	12:11	Public\Common\Oak\Lib\Mipsii_fp\Debug
Dhcpallo.lib	732,200	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Checked
Natlib.lib	968,286	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Checked
Natwdm.lib	104,652	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Checked
Ipnat.lib	3,162	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Checked
Ipnat.exp	1,647	27-Oct-2014	10:11	Public\Common\Oak\Lib\Mipsii_fp\Checked
Dhcpallo.lib	446,448	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Retail
Natlib.lib	686,818	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Retail
Natwdm.lib	103,218	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Retail
Ipnat.lib	3,210	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Retail
Ipnat.exp	1,699	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Retail
Dhcpallo.lib	706,268	27-Oct-2014	12:10	Public\Common\Oak\Lib\Sh4\Debug
Natlib.lib	895,222	27-Oct-2014	12:10	Public\Common\Oak\Lib\Sh4\Debug
Natwdm.lib	113,110	27-Oct-2014	12:10	Public\Common\Oak\Lib\Sh4\Debug
Ipnat.lib	3,210	27-Oct-2014	12:11	Public\Common\Oak\Lib\Sh4\Debug
Ipnat.exp	1,699	27-Oct-2014	12:11	Public\Common\Oak\Lib\Sh4\Debug
Dhcpallo.lib	670,456	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Checked
Natlib.lib	840,156	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Checked
Natwdm.lib	99,572	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Checked
Ipnat.lib	3,210	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Checked
Ipnat.exp	1,699	27-Oct-2014	10:11	Public\Common\Oak\Lib\Sh4\Checked