When I connect my mac to my tomato openvpn, I keep getting errors like: write to TUN/TAP : Input/output error (code=5) repeated over and over, no matter whether I start the connection in Tunnelblick or start openvpn directly from the command line with a minimum number of arguments. It looks like the problem discussed here - http://code.google.com/p/tunnelblick/issues/detail?id=73 - which worries me, as the status of that bug report is set to 'Abandoned'... So I'm wondering is this an openvpn client issue, or what? I set up my openvpn server and client config using this guide: http://blog.johnso.org/2009/08/how-to-setup-openvpn-in-tomato.html . The only changes I made were port number and changing udp to tcp. What workaround can I use to make this work?