Check piblic IP before and after connecting to VPN

orb.yml

@@ -42,10 +42,17 @@ commands:
       - run:
           name: Connect to VPN
           command: |
+            wget -qO- http://checkip.amazonaws.com > initial.ip
             sudo openvpn --config config.ovpn --auth-user-pass vpn.login > openvpn.log 2>&1 &
             while [ -n "$(ip addr show tun0 2>&1 > /dev/null)" ]; do
               sleep 0.1;
             done
+            if [ "$(cat initial.ip)" == "$(wget -qO- http://checkip.amazonaws.com)" ]
+            then
+              echo "This computer's apparent public IP address was not different after connecting"
+              echo "This may mean that your VPN is not configured correctly."
+              return 1
+            fi
             cat openvpn.log
   disconnect:
     description: "Disconnect from OpenVPN"