DNS lookup failures until I reset ethernet adapter

[unprovoked 0]

I am using AirVPN on Windows.  When moving to a new location (e.g. between home and work), the AirVPN client automatically re-connects, but all DNS lookups fail.  Example output from nslookup:

 

DNS request timed out.

    timeout was 2 seconds.

Default Server:  UnKnown

Address:  10.5.0.1

 

> google.com

Server:  UnKnown

Address:  10.5.0.1

 

DNS request timed out.

    timeout was 2 seconds.

 

Sometimes, disconnecting and reconnecting to AirVPN fixes the problem, but frequently it does not.  So one thing I try is to disable and re-enable the ethernet adapter before re-connecting the AirVPN.  That usually helps, but even then, sometimes it does not.  At that point, I disconnect, then add google dns to the ethernet adapter IPv4 DNS settings, and then reconnect to AirVPN (which then removes the google dns setting).

 

I don't understand what is going on, and I think my "solutions" are like black magic, partly due to my poor grasp of networking.  How can I troubleshoot my connection / settings so I don't have the DNS problems (when moving locations) in the first place?

[zhang888 1066]

Which options do you have in the Advanced > DNS tab of the Air client?

[unprovoked 0]

I'm pretty sure I kept them at the default setting.  Here are the settings in that tab:

 

   DNS Switch mode: Automatic

   Check if the tunnel uses AirVPN DNS: checked

   DNS server list: empty, so it uses the DNS servers recommended by the VPN.