Hi, I'm using the GUI on my ubuntu linux machine. I've got the Network Lock on, and I've tried both "renaming" and "resolveconf" DNS modes, and I'm still getting DNS leaks. When I run a test at https://www.dnsleaktest.com I get at least one of my ISP's servers showing up, under the AirVPN one. Do I got no alternative but to sort it out in my firewall settings? ta