How to Tether NordVPN internet from Android to Laptop? I tether my internet with my phone. 
I connect with my laptop to it. 
If I keep my VPN client (NordVPN) activet, internet does not work. 

NordVPN support says to configure VPN in Settings > VPN. 
However, I want to use many VPN servers so manually setting each there is not possible. 
NordVPN frontend has a nice map where you can choose which VPN server to use. 
Internet works with VPN in my phone but not in my laptop when it is using the tethered source. 

Differential condition: NordVPN Android application does not keep VPN active all the time    


complication: Client laptop cannot get internet in USB tethering when VPN is active in the phone


I forwarded this thread (26.9.2016, 3.10.2016 and 4.10.2016) to the NordVPN support and stated a deep wish to get a manual about using NordVPN internet from phone with your Debian laptop. 
Feel free to ask me more details about the test configuration if needed. 
Questions of the tech support


Does [Android NordVPN] disconnect when you are browsing or not launching at all? It disconnects itself when browsing internet. 
Can you give more information about our application not keeping connection at all time. How often you are getting disconnect and on what event it disconnects ( i.e. when you lock your phone or when it fall in sleep for not using it). It occurs daily. It occurs when I lock my phone. 


Phone: Oneplus 2
Phone OS: 3.1 OxygenOS
Laptop: Asus Zenbook UX303UA
Laptop OS: Debian 8.5 64 bit
Laptop Linux kernel: 4.6 of backports
VPN client in Android: NordVPN (tried many locations)
How to Tether NordVPN internet from Android to Laptop?

Answer from NordVPN support of ID #555274


  Unfortunately, when you are using VPN your device automatically becomes unreachable to any other devices due to safety so sadly you won't be able to use usb tether while VPN is active.


I asked further why this is going to be changed in NordVPN. 
Why it cannot be guaranteed at the moment?


  Unfortunately, it's technically impossible to make a device to be
  reachable when it uses VPN. Maybe someday someone will find how to
  make unreachable device to become reachable when VPN is active but for
  know there is no solution.


I think this is not right because you can create a virtual machine which handles the ports for you. 
Please, see 


My Apple threads but applicable in Linux How to Mimic Location of Slave VPN for Primary VPN? since you cannot split the tunneling as observed in the thread How to Do Split Tunnelling with Slave ppp0 VPN + 2nd VPN?


Differential solution: 
Same security policy is used with openvpn terminal application in Debian OS. 
So it can be easier to test it first there and understand the situation better. 

Differential condition: NordVPN Android application does not keep VPN active all the time


  When you lock your phone the internet might disconnect for few seconds
  because of battery save feature on phone. However it should reconnect
  when you unlock your phone. 


I think the battery save explanation is sound here.