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I am a customer of Witopia; they provide a VPN service. For the client, they license a copy of Viscosity which is a GUI front-end for openVPN. Over the past couple of days I've noticed that if Viscosity can't connect, something happens where my network connection gets hijacked; I can't ping, connect to any websites, connect to DNS… I can't do anything.
Here is a snippet of what's going on in the Console:
10/5/10 9:21:45 PM openvpn[600] Connection reset, restarting [0]
10/5/10 9:21:45 PM openvpn[600] /Applications/Internet-Network/Viscosity.app/Contents/Resources/dnsdown.py tun0 1500 1544 10.244.0.110 10.244.0.109 restart
10/5/10 9:21:45 PM openvpn[600] SIGUSR1[soft,connection-reset] received, process restarting
10/5/10 9:21:45 PM openvpn[600] NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
10/5/10 9:21:45 PM openvpn[600] NOTE: --fast-io is disabled since we are not using UDP
10/5/10 9:21:45 PM openvpn[600] Re-using SSL/TLS context
10/5/10 9:21:45 PM openvpn[600] LZO compression initialized
10/5/10 9:21:45 PM mDNSResponder[16] NOTE: Wide-Area Service Discovery disabled to avoid crashing defective DNS relay 192.168.1.1:53
10/5/10 9:22:31 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:34 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:34 PM mDNSResponder[16] mDNSPlatformSendUDP sendto failed to send packet on InterfaceID 00000000 unicast/4 to 208.67.220.123:53 skt 15 error -1 errno 55 (No buffer space available) 1364468745
10/5/10 9:22:34 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:34 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:35 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:35 PM openvpn[600] RESOLVE: Cannot resolve host address: tlsvpn.iad.witopia.net: [HOST_NOT_FOUND] The specified host is unknown.
10/5/10 9:22:35 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:35 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:35 PM kernel dlil_output: output error retval = 37
10/5/10 9:22:35 PM openvpn[600] RESOLVE: Cannot resolve host address: tlsvpn.iad.witopia.net: [HOST_NOT_FOUND] The specified host is unknown.
10/5/10 9:22:35 PM kernel dlil_output: output error retval = 37
If I did a ping, it would tell me that there would be the following message:
ping: sendto: No buffer space available
I had to reboot to get my network connection back. Does anyone know how to resolve this issue?
I am running a MacBook Intel Core Duo 1.83 GHz, MacOS X 10.5.8, Viscosity 1.0.9. Upgrading Viscosit breaks my access to Witopia servers (I don't know why, I just know it does!)