The IP address %1 you have entered for this network adapter is already assigned to another adapter '%2' on this computer. ...

The IP address %1 you have entered for this network adapter is already assigned to another adapter '%2' on this computer. If the same address is assigned to both adapters and they both become active, only one of them will use this address.  This may result in incorrect system configuration. 

Do you want to fix the problem by entering a different IP address for this adapter in the list of IP addresses in the Advanced dialog box?