Cannot change host system for WinDBG

[HOWARD WEISS]

Hi

 

I am running Qemu under Linux with a Windows 10 target.  I have been using WindDBG on another computer to debug my device driver when Windows starts.  To configure the connection, I used bcdedit and specified

 

bcdedit /dbgsettings net hostip:10.0.0.111 port:50010 key:1.2.3.4

 

I then run WinDBG on another windows 10 system with IP4  10.0.0.111.  It wait for my windows client to connect.  When it does, I can debug the device driver.

 

I want to change the host computer to 10.0.0.176 (I need to return 10.0.0.111 to its owner)

 

I tried reconfiguring the target system using bcdedit as follows

 

bcdedit /dbgsettings net hostip:10.0.0.111 port:50010 key:1.2.3.4

 

If I run bcdedit /fbgsettings it reports that the hostip is 10.0.0.176.  However, if run WinDBG on system with IP 10.0.0.176, the target does not connect.  It continues to connect to 10.0.0.111

 

I discovered the following in the registry key 8HKLM\System\CurrentControlSet\Control\SystemStartOptions

 

DEBUG ENCRYPTION_KEY=****** HOSTIP:10.0.0.111 HOST_PORT=50010. 

 

Supposedly, this is irrelevant to how windows boots.  Regardless,  I tried changing the HOSTIP to 10.0.0.176 without effect

 

Even odder, the Windows 10 target connects to the host REGARDLESS of whether I set debug to OFF or ON in bcdedit.

 

Is the boot information being retained somehow?

 

Please advise

 

Howard Weiss