diff --git a/src/app/handle.rs b/src/app/handle.rs
index 084175e..ace99a1 100644
--- a/src/app/handle.rs
+++ b/src/app/handle.rs
@@ -15,6 +15,7 @@ impl App {
         let mode = self.screen.last_mut().unwrap();
         match mode {
             CurrentScreen::Main
+            | CurrentScreen::Help
             | CurrentScreen::Logging
             | CurrentScreen::Receiving
             | CurrentScreen::Sending(SendingScreen::Files(FileMode::Picking))
@@ -24,13 +25,11 @@ impl App {
                 KeyCode::Char('r') => self.recv(),
                 KeyCode::Char('l') => self.logs(),
                 KeyCode::Char('m') => self.main(),
+                KeyCode::Char('h') | KeyCode::Char('?') => self.help(),
+                KeyCode::Char('c') => self.service.refresh_peers().await,
                 KeyCode::Esc => self.pop(),
                 _ => match mode {
-                    CurrentScreen::Main => {
-                        if let KeyCode::Char('d') = code {
-                            self.service.refresh_peers().await
-                        }
-                    }
+                    CurrentScreen::Main | CurrentScreen::Help => {}
                     CurrentScreen::Logging => match code {
                         KeyCode::Left => super::change_log_level(-1),
                         KeyCode::Right => super::change_log_level(1),
@@ -177,6 +176,14 @@ impl App {
         }
     }
 
+    pub fn help(&mut self) {
+        let last = self.screen.last();
+        match last {
+            Some(CurrentScreen::Help) => {}
+            _ => self.screen.push(CurrentScreen::Help),
+        }
+    }
+
     // accept a content receive request
     fn accept(&mut self) {
         let Some(idx) = self.receiving_state.selected() else {
diff --git a/src/app/mod.rs b/src/app/mod.rs
index 7a45290..9b2b0aa 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -68,6 +68,7 @@ pub enum CurrentScreen {
     Receiving,
     Stopping,
     Logging,
+    Help,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
diff --git a/src/app/widgets.rs b/src/app/widgets.rs
index 6f2a954..cb2564b 100644
--- a/src/app/widgets.rs
+++ b/src/app/widgets.rs
@@ -156,6 +156,9 @@ impl Widget for &mut App {
                     buf,
                 );
             }
+            CurrentScreen::Help => {
+                // TODO: display help
+            }
             CurrentScreen::Logging | CurrentScreen::Stopping => {
                 outer_frame(&current_screen, &LOGGING_MENU, area, buf);
                 logger(area.inner(subscreen_margin), buf);
diff --git a/src/lib.rs b/src/lib.rs
index fe746aa..45727ba 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -115,7 +115,7 @@ impl JocalService {
         let (tx, rx) = mpsc::unbounded_channel();
         let socket = UdpSocket::bind(LISTENING_SOCKET_ADDR).await?;
         socket.set_multicast_loop_v4(false)?;
-        socket.set_multicast_ttl_v4(8)?; // 8 hops out from localnet
+        socket.set_multicast_ttl_v4(1)?; // local subnet only
         socket.join_multicast_v4(MULTICAST_IP, Ipv4Addr::from_bits(0))?;
 
         let client = reqwest::ClientBuilder::new()