From 07602d81afdfa29c1ddc3453539ec4ae15d37213 Mon Sep 17 00:00:00 2001
From: Loic Lambiel <lll@exoscale.ch>
Date: Wed, 4 Jun 2014 16:06:08 +0200
Subject: [PATCH] CLOUDSTACK-6927: catch empty cmd

---
 scripts/vm/network/security_group.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/vm/network/security_group.py b/scripts/vm/network/security_group.py
index aea7b7cb6b8..f80c9e42cb8 100755
--- a/scripts/vm/network/security_group.py
+++ b/scripts/vm/network/security_group.py
@@ -547,6 +547,8 @@ def delete_rules_for_vm_in_bridge_firewall_chain(vmName):
     delcmds = execute(delcmd).split('\n')
     delcmds.pop()
     for cmd in delcmds:
+        if cmd == '':
+            continue
         try:
             execute("iptables " + cmd)
         except: