From 00f1398f7a8543e2448723635d93ea6ddf1eaadb Mon Sep 17 00:00:00 2001
From: "Guillaume J. Charmes" <charmes.guillaume@gmail.com>
Date: Wed, 6 Nov 2013 07:37:43 -0800
Subject: [PATCH] Add debug to iptables

---
 iptables/iptables.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/iptables/iptables.go b/iptables/iptables.go
index 8139b9881..82ecf8bb5 100644
--- a/iptables/iptables.go
+++ b/iptables/iptables.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"net"
+	"os"
 	"os/exec"
 	"strconv"
 	"strings"
@@ -122,10 +123,12 @@ func Raw(args ...string) ([]byte, error) {
 	if err != nil {
 		return nil, ErrIptablesNotFound
 	}
+	if os.Getenv("DEBUG") != "" {
+		fmt.Printf("[DEBUG] [iptables]: %s, %v\n", path, args)
+	}
 	output, err := exec.Command(path, args...).CombinedOutput()
 	if err != nil {
 		return nil, fmt.Errorf("iptables failed: iptables %v: %s (%s)", strings.Join(args, " "), output, err)
 	}
 	return output, err
-
 }