From 654b2a0fc92293b91d374ab1c3312b3f026f05ba Mon Sep 17 00:00:00 2001
From: ligc <ligc@8638fb3e-16cb-4fca-ae20-7b5d299a9bcd>
Date: Mon, 21 Feb 2011 07:20:14 +0000
Subject: [PATCH] isInSameSubnet: error condition check

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@8897 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
---
 perl-xCAT/xCAT/Utils.pm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/perl-xCAT/xCAT/Utils.pm b/perl-xCAT/xCAT/Utils.pm
index 5f381be75..a6d95ff95 100644
--- a/perl-xCAT/xCAT/Utils.pm
+++ b/perl-xCAT/xCAT/Utils.pm
@@ -2607,6 +2607,11 @@ sub isInSameSubnet
     $ip1 = xCAT::NetworkUtils->getipaddr($ip1);
     $ip2 = xCAT::NetworkUtils->getipaddr($ip2);
 
+    if (!defined($ip1) || !defined($ip2))
+    {
+        return undef;
+    }
+
     if ((($ip1 =~ /\d+\.\d+\.\d+\.\d+/) && ($ip2 !~ /\d+\.\d+\.\d+\.\d+/))
       ||(($ip1 !~ /\d+\.\d+\.\d+\.\d+/) && ($ip2 =~ /\d+\.\d+\.\d+\.\d+/)))
     {