Hello anonymous usertuardo-5606 ,
Apologies for the delay in response.
You can direct all traffic to the VPN tunnel by advertising 0.0.0.0/1 and 128.0.0.0/1 as custom routes to the VPN clients.
Reference : https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-p2s-advertise-custom-routes#forced-tunneling
Custom routes are supported and that forces all traffic from the client to Azure. However, I want to emphasize that the VPN client will loose all connectivity to the Internet (even through the local internet breakout as all traffic will be forced to Azure).
Kindly let us know if the above helps or you need further assistance on this issue.
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