We have two networks:-
192.168.1.x is connected to a Firebox x550e
192.168.2.x is connected to a Draytek Vigor 2910
There is a VPN between the Firebox and the Vigor 2910. The external IP of the Firebox is 192.168.0.53 and the external IP of the Draytek is 192.168.0.54. Both units send their internet traffic through gateway 192.168.0.2
Up until yesterday, the Firebox was on OS 10.2.8(dwn). Both networks could access each other through the VPN tunnel, and both networks could get internet access.
Last night, I upgraded the Firebox to it's latest OS - 11.3. Now, both networks can access each other, the 192.168.1.x network can access the internet, but the 192.168.2.x network no longer gets any internet access and I don't understand why since the internet traffic doesn't (or at least shouldn't) go through the tunnel at all...