What is this?

Hello again folks:

 

I was reviewing my logs and noticed the following entry and was wondering what it meant (I know, a little knowledge can be dangerous....):

 

"IP Address has disappeared from adapter RealTek PCIe family controller and is no longer being protected" 

 

It also shows the IP address.  I think this happens at startup.  I'm assuming it's normal, but thought I'd check. 

 

Thanks, BC

 

Win 7 Pro - fully updated, NIS 2011, Windows Defender and Firewall disabled.