diff --git a/vnt/src/channel/socket/unix.rs b/vnt/src/channel/socket/unix.rs
index cea3262..4a7b50a 100644
--- a/vnt/src/channel/socket/unix.rs
+++ b/vnt/src/channel/socket/unix.rs
@@ -1,4 +1,7 @@
-use crate::channel::socket::{get_interface, LocalInterface, VntSocketTrait};
+#[cfg(any(target_os = "linux", target_os = "macos"))]
+use crate::channel::socket::get_interface;
+use crate::channel::socket::{LocalInterface, VntSocketTrait};
+#[cfg(any(target_os = "linux", target_os = "macos"))]
 use anyhow::Context;
 use std::net::Ipv4Addr;
 
@@ -22,6 +25,12 @@ impl VntSocketTrait for socket2::Socket {
         Ok(())
     }
 }
+#[cfg(target_os = "android")]
+impl VntSocketTrait for socket2::Socket {
+    fn set_ip_unicast_if(&self, _interface: &LocalInterface) -> anyhow::Result<()> {
+        Ok(())
+    }
+}
 
 #[cfg(any(target_os = "linux", target_os = "macos"))]
 pub fn get_best_interface(dest_ip: Ipv4Addr) -> anyhow::Result<LocalInterface> {
@@ -35,6 +44,6 @@ pub fn get_best_interface(dest_ip: Ipv4Addr) -> anyhow::Result<LocalInterface> {
     Ok(LocalInterface::default())
 }
 #[cfg(target_os = "android")]
-pub fn get_best_interface(dest_ip: Ipv4Addr) -> anyhow::Result<LocalInterface> {
+pub fn get_best_interface(_dest_ip: Ipv4Addr) -> anyhow::Result<LocalInterface> {
     Ok(LocalInterface::default())
 }
diff --git a/vnt/src/handle/maintain/heartbeat.rs b/vnt/src/handle/maintain/heartbeat.rs
index d58fe88..5327a11 100644
--- a/vnt/src/handle/maintain/heartbeat.rs
+++ b/vnt/src/handle/maintain/heartbeat.rs
@@ -79,10 +79,6 @@ fn heartbeat0(
             }
             heartbeat_packet_server(device_map, server_cipher, src_ip, gateway_ip)
         } else {
-            if dest_ip < src_ip {
-                // 只向比自己大的发
-                continue;
-            }
             heartbeat_packet_client(client_cipher, src_ip, dest_ip)
         };
         let net_packet = match net_packet {
@@ -93,9 +89,13 @@ fn heartbeat0(
             }
         };
         for (index, route) in routes.iter().enumerate() {
-            if index >= channel_num + 1 {
+            let limit = if context.first_latency() {
+                channel_num + 1
+            } else {
+                channel_num
+            };
+            if index >= limit {
                 // 多余的通道不再发送心跳包,让它自动过期
-                // 这里多留一个增加稳定性
                 break;
             }
             if let Err(e) = context.send_by_key(&net_packet, route.route_key()) {