Feature: use native syscall to bind interface on Linux and macOS

component/dialer/bind_linux.go

@@ -0,0 +1,26 @@
+package dialer
+
+import (
+	"net"
+	"syscall"
+)
+
+func bindIfaceToDialer(dialer *net.Dialer, ifaceName string) error {
+	dialer.Control = func(network, address string, c syscall.RawConn) error {
+		return c.Control(func(fd uintptr) {
+			syscall.BindToDevice(int(fd), 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)
+		})
+	}
+
+	return nil
+}