When the Parallels network adapter gets added to an existing OSX/Tunnelblick install, it breaks Tunnelblick; all traffic gets routed to an unknown destination (OSX's own traffic included). I realize this is more of an OpenVPN problem than a Parallels problem; however I figured it was worth a shot to see if anyone here has experienced and or remedied the issue, or had any insight. I've tried changing the DHCP range setting in Parallells (to 192.168.0.1) but it had no effect.
