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, 0 deletions

diff --git a/mullvad-cli/src/format.rs b/mullvad-cli/src/format.rs
index 8f8201814f..0d55c53173 100644
--- a/mullvad-cli/src/format.rs
+++ b/mullvad-cli/src/format.rs
@@ -14,6 +14,11 @@ pub fn print_state(state: &TunnelState, verbose: bool) {
                 "Connected to {}",
                 format_relay_connection(endpoint, location.as_ref(), verbose)
             );
+            if verbose {
+                if let Some(tunnel_interface) = &endpoint.tunnel_interface {
+                    println!("Tunnel interface: {tunnel_interface}")
+                }
+            }
         }
         Connecting { endpoint, location } => {
             let ellipsis = if !verbose { "..." } else { "" };