krata: fix guest destruction

crates/kratanet/src/backend.rs

@@ -153,7 +153,7 @@ impl NetworkBackend {
     pub async fn launch(self) -> Result<JoinHandle<()>> {
         Ok(tokio::task::spawn(async move {
             info!(
-                "lauched network backend for krata guest {}",
+                "launched network backend for krata guest {}",
                 self.metadata.uuid
             );
             if let Err(error) = self.run().await {

crates/kratanet/src/raw_socket.rs

@@ -291,6 +291,12 @@ impl AsyncRawSocketChannel {
                                 debug!("failed to transmit: would block");
                                 continue;
                             }
+
+                            // device no longer exists
+                            if error.raw_os_error() == Some(6) {
+                                break;
+                            }
+
                             return Err(anyhow!(
                                 "failed to write {} bytes to raw socket: {}",
                                 packet.len(),