Add tunnel interface to output of `mullvad status`

Print the name of the tunnel interface when the app is in a connected
state and the user requests verbose output by running `mullvad status
-v`.

To accomplish this, the state machine needs attach more metadata about
the tunnel state when transitioning to the `Connected` state than prior
to this change.

1 files changed, 5 insertions, 1 deletions

diff --git a/talpid-core/src/tunnel_state_machine/connected_state.rs b/talpid-core/src/tunnel_state_machine/connected_state.rs
index de9f43335e..2080416cad 100644
--- a/talpid-core/src/tunnel_state_machine/connected_state.rs
+++ b/talpid-core/src/tunnel_state_machine/connected_state.rs
@@ -323,7 +323,11 @@ impl TunnelState for ConnectedState {
         bootstrap: Self::Bootstrap,
     ) -> (TunnelStateWrapper, TunnelStateTransition) {
         let connected_state = ConnectedState::from(bootstrap);
-        let tunnel_endpoint = connected_state.tunnel_parameters.get_tunnel_endpoint();
+        let tunnel_interface = Some(connected_state.metadata.interface.clone());
+        let tunnel_endpoint = talpid_types::net::TunnelEndpoint {
+            tunnel_interface,
+            ..connected_state.tunnel_parameters.get_tunnel_endpoint()
+        };
 
         if let Err(error) = connected_state.set_firewall_policy(shared_values) {
             DisconnectingState::enter(