fix: added a default route for MAC addresses

there were issues with MAC addresses not having a valid route when it
couldn't find the right route

pcap-sys/src/lib.rs

@@ -200,6 +200,10 @@ impl<T: State> Interface<T> {
 
         Ok(())
     }
+
+    pub fn name(&self) -> &str {
+        std::str::from_utf8(self.dev_name.as_bytes()).unwrap()
+    }
 }
 
 impl<T: Disabled> Interface<T> {