< nagios-scl3> Thu 20:26:40 PDT  openvpn1.corpdmz.scl3.mozilla.com:OpenVPN - UDP is CRITICAL: check_openvpn CRITICAL: [Errno 111] Connection refused Can verify that UDP connections aren't going through but TCP connections are.
Scheduled a restart of openvpn at 2230 Pacific Time. Email and IRC notifications sent out.
Restarted OpenVPN to fix the issue. Filed Bug 921337 for troubleshooting.