diff --git a/xCAT-server/lib/perl/xCAT/Postage.pm b/xCAT-server/lib/perl/xCAT/Postage.pm
index a8a1d8633..de2425e89 100644
--- a/xCAT-server/lib/perl/xCAT/Postage.pm
+++ b/xCAT-server/lib/perl/xCAT/Postage.pm
@@ -1865,6 +1865,38 @@ sub getPostScripts
     }
 
 
+    #for redhat 7, append "disableconsistentNICrename" to default postscripts 
+    #if "net.ifnames=0" is specified in kcmdline/addkcmdline of node or osimage 
+    my $tftpdir = xCAT::TableUtils::getTftpDir();
+    my $osimagetab=xCAT::Table->new('osimage',-create=>1);
+    my $osimgent = $osimagetab->getAttribs({imagename => $osimgname },'osvers');
+    my $os = $osimgent->{'osvers'};    
+    my $nrret = $::GLOBAL_TAB_HASH{noderes}{$node};
+    my $netboot = $nrret->{'netboot'};
+
+    if( ($os =~ "rhel7*") || ($os =~ "rhels7*")  )
+    {
+       my $nodecfg;
+       if($netboot eq "grub2")
+       {
+          $nodecfg="$tftpdir/boot/grub2/$node";
+       }elsif($netboot eq "xnba")
+       {
+          $nodecfg="$tftpdir/xcat/xnba/nodes/$node";
+
+       }elsif($netboot eq "pxe")
+       {
+          $nodecfg="$tftpdir/pxelinux.cfg/$node";
+
+       }
+
+       my $rc=system("grep net.ifnames=0 $nodecfg >/dev/null 2>&1");
+       if($rc ==0)
+       {
+            $result .=  "disableconsistentNICrename\n";
+       }
+    }    
+
     return $result;
 }