research-hub/hub-modules/networking/routes/AzureFirewallForcedTunnel.jsonc (10 lines of code) (raw):

[ { "name": "ForcedTunnelRoute", "properties": { "addressPrefix": "0.0.0.0/0", "nextHopType": "VirtualAppliance", "nextHopIpAddress": "{{nvaIPAddress}}" } } ]