just checked- apparently when you do an 'ipconfig' on win7 it labels the l2tp connection as 'PPP adapter xxxx'
said by chipconn:
Is this right? Where is this IP coming from? Why is the subnet mask 255.255.255.255? Won't that block the whole subnet? Why isn't there a Gateway listed?
-the 192.168.55.2 ip should be coming from the 'IP address pool' setting in your USG's L2TP config
-255.255.255.255 mask is normal
-gateway is normal. if you do a 'route print' you should see Windows sets the default route to be the VPN connection with gateway 'on-link'(by default Windows sends everything thru the tunnel)
What do you have set up for policy routes on your USG?
Should have 1 route:
And another route(for internet access thru the tunnel):