Chewy509
Wotty wot wot.
Found this one today...
If you set a static IPv4 address on a LAN adapter that has no gateway or DNS setting, then Win7 will revert that connection back to DHCP on next reboot. (confirmed by using ipconfig /all from the CLI). BUT if you look at the IPv4 properties, it will show the correct configured address.
eg.
VirtualBox Host-Only Network
IP: 192.168.56.1
Netmask: 255.255.255.0
Gateway: <blank>
DNS: <blank>
This is typically found when using VMs to create a LAN between VM Guests and the Host PC/Server, but not giving the guests general internet access.
PS. Hope everyone had a good break (if you did manage one)?
Looks like a recent patch fixed this one... (one fixed, so many more to go).