On the result page of on https://ipleak.net there is a referens to "AirVPN Exit Node". What is an "AirVPN Exit Node"? Why does ipleak.net check for "AirVPN Exit Node", is it a security/privacy issue in some way? Who becomes an "AirVPN Exit Node"? And under which circumstances could/will this happen? What is the result/impact/downside of being an "AirVPN Exit Node"? Will it limit functionality/access or anything else that would be available otherwise? If being an "AirVPN Exit Node" is a "bad" thing, can it then be avoided? is there any documentation available on "AirVPN Exit Node"?