tun: auto_route:+ sysctl -w net.ipv4.ip_forward=1

e1732a364fed · Jan 1, 2099 · bb6aa7a · bb6aa7a
1 parent fa5b9c3
commit bb6aa7a
Show file tree

Hide file tree

Showing 3 changed files with 11 additions and 5 deletions.
diff --git a/resource/local.lua b/resource/local.lua
@@ -605,8 +605,9 @@ local config_16_tun = {
 
     --[[
 
-        演示 inbound 是 ip+ 自动路由, outbound 是 tcp+tls+ws
+        演示 inbound 是 ip + 自动全局路由, outbound 是 tcp+tls+ws
         这就做出了一个简单的VPN. 注意, 这种情况不可通过 tcp/udp 目标分流, 因为传递的直接是ip, 且未经任何探查和修改
+        同时为了保证dns 不被污染, 要在 dns_list 中指定一个 好的dns
 
     --]]
 

diff --git a/resource/remote.lua b/resource/remote.lua
@@ -169,7 +169,7 @@ Config = {
     --]]
 
     ---[[
-    -- 对应 local.lua 使用 tun+IpRelayTest1 的 outbound 配置. 
+    -- 对应 local.lua 使用 tun 的 outbound 配置. 
     --  注意, 不像 tproxy, tun 示例不能本机自连测试
 
     outbounds = { {

diff --git a/src/net/tun/route.rs b/src/net/tun/route.rs
@@ -40,8 +40,11 @@ pub fn out_auto_route(params: &OutAutoRouteParams) -> anyhow::Result<()> {
 
         let router_ip = params.router_ip.as_deref().unwrap_or(DEFAULT_ROUTER_IP);
 
+        // ip_forward is NECESSARY
+
         let list = format!(
-            r#"ip route del default
+            r#"sysctl -w net.ipv4.ip_forward=1
+ip route del default
 ip route add default via {router_ip} dev {original_dev_name}
 iptables -I FORWARD -i {tun_dev_name} -o {original_dev_name} -m conntrack --ctstate NEW -j ACCEPT
 iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
@@ -101,8 +104,10 @@ pub fn in_auto_route(params: &InAutoRouteParams) -> anyhow::Result<Option<Vec<St
         //  因此该命令的成败不影响大局
         let _r = utils::run_command("ip", "route del default");
 
-        let list =
-            format!(r#"ip route add default via {tun_gateway} dev {tun_dev_name} metric 1"#,);
+        let list = format!(
+            r#"sysctl -w net.ipv4.ip_forward=1
+ip route add default via {tun_gateway} dev {tun_dev_name} metric 1"#,
+        );
 
         //ip route add default via {router_ip} dev {original_dev_name} metric 10