Trivially easy in Windows but I don’t do it often enough to remember exactly.
Start PowerShell (no need for admin mode)
Get-VPNConnection
Look for SplitTunneling value: false by default
Set-VPNConnection -Name “VPNname” -SplitTunneling $True
Quotes around VPN name are required
Get-VPNConnection
SplitTunneling should now be true.
Turn off split tunneling
Set-VPNConnection -Name “VPNname” -SplitTunneling $False
If the split tunnel is true, the remote gateway setting is disabled in the VPN. You may find that you cannot find remote computers by name but by IP address. Suggested fix online is to increase the Ethernet interface metric to a higher priority and the VPN to a lower so queries go to the remote servers first, then out to the internet. The differential in metrics should be in multiple thousands; any smaller and it can still have problems. This works for most websites but seems to have problems with ads on some pages locking up. My fix was to set split tunneling to false. There were too many problems with lags when working on MS documents remotely.
Jerry's blog 