http://kzaeunogz6s75ptgy6ifjzwwy75xdfenenswvrczd7mewxgrad5a.b32.i2p/leaktest
OpenVPN not running : If something causes the OpenVPN process to terminate abruptly (crash, or another program closes it [Antivirus, another VPN provider's client, etc.] then your real IP will leak, if you're not using a killswitch. Split tunneling misconfiguration : If you're doing split tunneling, certain traffic is routed outside the VPN.