Many streaming services implement DNS check and block any user with IP and DNS in different geo locations. Unfortunately, the ibVPN app in ClearOS suffers from a DNS leak, which renders it useless with many video streaming providers.

I check the DNS leak using dnsleak.com and dnsleaktest.com. There is always a leak when connecting via ClearOS. No leak appears when connecting directly from a client computer using ibVPN's ovpn configuration file. Attached are the /etc/clearos/ibvpn.d/ibvpn.ovpn from ClearOS and ibVPN_reference.ovpn for comparison.

I tried to solve the leak in ClearOS by using ibVPN DNS in Network -> IP Settings -> Network -> DNS, but without success. The DNS server I entered only appears as one of many servers used for resolving names.

I also edited /etc/resolv.conf in ClearOS by commenting out "nameserver 127.0.0.1" and by forcing another nameserver, but the leak is always there.

There are scripts in github, such as this one, for OpenVPN to prevent the leak but I'm not sure if they are compatible with ClearOS.

So, any suggestions to solve this issue?

Thank you.