Fix: should not bind interface on local address

component/dialer/bind_linux.go

@@ -5,22 +5,32 @@ import (
 	"syscall"
 )
 
-func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
-	dialer.Control = func(network, address string, c syscall.RawConn) error {
+type controlFn = func(network, address string, c syscall.RawConn) error
+
+func bindControl(ifaceName string) controlFn {
+	return func(network, address string, c syscall.RawConn) error {
+		ipStr, _, err := net.SplitHostPort(address)
+		if err == nil {
+			ip := net.ParseIP(ipStr)
+			if ip != nil && !ip.IsGlobalUnicast() {
+				return nil
+			}
+		}
+
 		return c.Control(func(fd uintptr) {
 			syscall.BindToDevice(int(fd), ifaceName)
 		})
 	}
+}
+
+func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
+	dialer.Control = bindControl(ifaceName)
 
 	return nil
 }
 
 func bindIfaceToListenConfig(lc *net.ListenConfig, ifaceName string) error {
-	lc.Control = func(network, address string, c syscall.RawConn) error {
-		return c.Control(func(fd uintptr) {
-			syscall.BindToDevice(int(fd), ifaceName)
-		})
-	}
+	lc.Control = bindControl(ifaceName)
 
 	return nil
 }