Digging into what happens when you do an ipconfig/reset and then an
ipconfig/renew shows the following in the first message sent out on the
Option: (t=53,l=1) DHCP Message Type = DHCP Discover
Option: (t=116,l=1) DHCP Auto-Configuration
Option: (t=61,l=7) Client identifier
Option: (t=50,l=4) Requested IP Address = 192.168.0.106
Option: (t=12,l=4) Host Name = "Dave"
Option: (t=60,l=8) Vendor class identifier = "MSFT 5.0"
As you can see, the client has remembered the previous IP address (not the
DHCP server address as I originally suspected), and is requesting it again.
So the question becomes, how can I force the laptop to forget it's previous
IP address - given that ipconfig/reset does not do this?