diff --git a/perl-xCAT/xCAT/Postage.pm b/perl-xCAT/xCAT/Postage.pm
index ac5ece9cb..9d237265d 100644
--- a/perl-xCAT/xCAT/Postage.pm
+++ b/perl-xCAT/xCAT/Postage.pm
@@ -133,10 +133,16 @@ sub makescript {
          push @scriptd, "SITEMASTER=".$value."\n";
          push @scriptd, "export SITEMASTER\n";
          # if node has service node as master then override site master
-         my $et = $noderestab->getNodeAttribs($node,['xcatmaster']);
+         my $et = $noderestab->getNodeAttribs($node,['xcatmaster', 'servicenode']);
          if ($et and defined($et->{'xcatmaster'})) { 
            $value = $et->{'xcatmaster'};
-         }
+         } 
+	 if ($et and defined($et->{'servicenode'})) { 
+	     my $tmp = $et->{'servicenode'};
+	     if ($tmp =~ /,/) { #service node pool case,use local host as the master
+		 $value=xCAT::Utils->getFacingIP($node); 
+	     }
+	 }
          push @scriptd, "$attribute=".$value."\n";
          push @scriptd, "export $attribute\n";
  
diff --git a/perl-xCAT/xCAT/Utils.pm b/perl-xCAT/xCAT/Utils.pm
index 4af2b14b5..a7e241a51 100644
--- a/perl-xCAT/xCAT/Utils.pm
+++ b/perl-xCAT/xCAT/Utils.pm
@@ -3416,4 +3416,93 @@ sub CheckVersion
     return 0;
 }
 
+#-------------------------------------------------------------------------------
+
+=head3   getFacingIP
+       Gets the ip address of the adapter of the localhost that is facing the
+    the given node.
+    Arguments:
+       The name of the node that is facing the localhost.
+    Returns:
+       The ip address of the adapter that faces the node.
+
+=cut
+
+#-------------------------------------------------------------------------------
+sub getFacingIP {
+    my ($class, $node) = @_;
+    my $ip;
+    my $cmd;
+    my @ipaddress;
+
+    my $nodeip = inet_ntoa(inet_aton($node));
+    unless ($nodeip =~ /\d+\.\d+\.\d+\.\d+/)
+    {
+        return 0;    #Not supporting IPv6 here IPV6TODO
+    }
+
+    $cmd = "ifconfig" . " -a";
+    $cmd = $cmd . "| grep \"inet \"";
+    my @result = xCAT::Utils->runcmd($cmd, 0);
+    if ($::RUNCMD_RC != 0)
+    {
+        xCAT::MsgUtils->message("S", "Error from $cmd\n");
+        exit $::RUNCMD_RC;
+    }
+    
+    # split node address
+    my ($n1, $n2, $n3, $n4) = split('\.', $nodeip);
+
+    foreach my $addr (@result)
+    {
+        my $ip;
+        my $mask;
+        if (xCAT::Utils->isLinux())
+        {
+            my ($inet, $addr1, $Bcast, $Mask) = split(" ", $addr);
+            if ((!$addr1) || (!$Mask)) { next; } 
+	    my @ips = split(":", $addr1);
+	    my @masks=split(":", $Mask);
+	    $ip=$ips[1];
+	    $mask=$masks[1];	    
+        }
+        else
+        {    #AIX
+            my ($inet, $addr1, $netmask, $mask1, $Bcast, $bcastaddr) = split(" ", $addr);
+            if ((!$addr1) && (!$mask1)) { next;}
+            $ip=$addr1;
+	    $mask1 =~ s/0x//;
+	    $mask=`printf "%d.%d.%d.%d" \$(echo "$mask1" | sed 's/../0x& /g')`;
+        }
+
+        if($ip && $mask) {
+	    # split interface IP
+	    my ($h1, $h2, $h3, $h4) = split('\.', $ip);
+	    
+	    # split mask
+	    my ($m1, $m2, $m3, $m4) = split('\.', $mask);
+	    
+	    # AND this interface IP with the netmask of the network
+	    my $a1 = ((int $h1) & (int $m1));
+	    my $a2 = ((int $h2) & (int $m2));
+	    my $a3 = ((int $h3) & (int $m3));
+	    my $a4 = ((int $h4) & (int $m4));
+	    
+	    # AND node IP with the netmask of the network
+	    my $b1 = ((int $n1) & (int $m1));
+	    my $b2 = ((int $n2) & (int $m2));
+	    my $b3 = ((int $n3) & (int $m3));
+	    my $b4 = ((int $n4) & (int $m4));
+	    
+
+	    if ( ($b1 == $a1) && ($b2 ==$a2) && ($b3 == $a3) && ($b4 == $a4)) {
+		return $ip;
+	    }
+	}
+    }
+
+    xCAT::MsgUtils->message("S", "Cannot find master for the node $node\n");
+    return 0;   
+}
+
 1;