Applies to:

Windows Server 2008 R2 Service Pack 1

Windows Server 2008 R2 SP1

W2K8 R2 Service Pack 1

W2K8 R2 SP1

Note: You should check http://support.microsoft.com for the latest version of the different files.

List of DHCP related hotfixes post SP1 for Windows Server 2008 R2 SP1 as of Jan. 2012:

2632816 A Windows Server 2008 R2-based DHCP server cannot lease IP addresses if the server cannot reach any RWDCs in an Active Directory domain environment
http://support.microsoft.com/?id=2632816

Update(s):
Dhcpssvc.dll 6.1.7601.21842

Supersede(s):
2616864 DHCP Server service crashes randomly in Windows Server 2008 or in Windows Server 2008 R2
2598526 Client computers do not obtain an IP address when they request a DHCP lease from a Windows Server 2008 R2-based DHCP server
2523974 The DHCP Server service stops responding during the shutdown process when the DHCP Server service is running under a heavy load in Windows Server 2008 R2
2479424 A Windows Server 2008 or Windows Server 2008 R2 NAP-enabled DHCP server incorrectly issues fully accessible IP addresses to Windows XP Service Pack 3 clients that are not NAP compliant

2554766 A VPN session works incorrectly during deployment of Windows 7 SP1 or Windows Server 2008 R2 SP1, and deployment fails
http://support.microsoft.com/?id=2554766

Update(s):
Dhcpcore.dll 6.1.7601.21730

Supersede(s):
2459530 Event ID 5719 and event ID 1129 may be logged when a non-Microsoft DHCP Relay Agent is used

2499016 The Windows Event Log service may crash in Windows 7 or in Windows Server 2008 R2
http://support.microsoft.com/?id=2499016

Update(s):
Wevtsvc.dll 6.1.7601.21667