dummy set_up function for macos

tun/Cargo.toml

@@ -14,6 +14,8 @@ tracing = "0.1"
 log = "0.4"
 serde = { version = "1", features = ["derive"], optional = true }
 schemars = { version = "0.8", optional = true }
+
+[target.'cfg(feature = "linux")'.dev-dependencies]
 rtnetlink = "0.14"
 
 futures = { version = "0.3.28", optional = true }

tun/src/unix/apple/mod.rs

@@ -247,4 +247,10 @@ impl TunInterface {
             .try_into()
             .map_err(|_| Error::new(ErrorKind::Other, "Conversion error"))?
     }
+
+    #[throws]
+    #[instrument]
+    pub fn set_up(&self, up: bool) {
+        tracing::warn!("Setting tun up is not supported yet on apple.");
+    }
 }