Hello,
Welcome to Microsoft Vista Answers Forum!
In addition to the information provided, please take a look at the link below for more information concerning why you lose Internet Connection after sleep mode.
http://support.microsoft.com/kb/933872
After you wake the computer from sleep, the DHCP Client service (Dhcpcsvc.dll) is responsible for informing the IP stack about the routing information. The routing information is stored in the network store interface. This problem occurs when the network store
interface already has the routing information that the DHCP Client service wants to store. When the storage operation fails, all routing information in NSI is lost. Therefore, the computer loses all the routing information. This includes the default gateway.
<quotes>
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table.
Dhcpcmonitor.dll 6.0.6000.20554 10,240 10-Mar-2007 02:47 x86
</quotes>
I have Vista SP2 and I can't tell if this hotfix is included in it or regressed in at least dhcpmonitor.dll.
<cmd_output OS="VistaSP2">
C:\Windows\System32>g:filever dhcp*.dll
c:\windows\system32\dhcpcmonitor.dll
--a-- W32i DLL ENU 6.0.6000.16386 shp 10,240 11-02-2006 dhcpcmonitor.dll
c:\windows\system32\dhcpcsvc.dll
--a-- W32i DLL ENU 6.0.6002.18005 shp 204,288 04-11-2009 dhcpcsvc.dll
</cmd_output>
Was the reported change to dhcpcmonitor.dll essential to the operation of this hotfix?
TIA
Robert