/etc/resolv.conf is wrong when using VPN

[ayanamist]

• Your Windows build number: (Type ver at a Windows Command Prompt)
  Microsoft Windows [Version 10.0.15063]

• What you're doing and what's happening: (Copy&paste specific commands and their output, or include screen shots)
  Using a WiFi to connect to internet, then use a VPN (like AnyConnect) to dial into company private net.
  Then use nslookup to see effective DNS server:
  
  However, /etc/resolv.conf shows that this dns server is not the first one.
  
  So some queries which only 10.20.0.98 can answer is failed.

• What's wrong / what should be happening instead:
  WSL use the same dns order like windows

[legigor]

Same here #1881

[sunilmut]

If you are connected to a VPN and lose connectivity within bash, please try the workaround posted here. It should work for Creators Update and above. Post Fall Creators Update, we will be looking at a better support for other VPN solutions.

Thanks to @bradley101, who first pointed out the workaround. Also, marking this duplicate of #1350