diff --git a/xCAT-server/share/xcat/mypostscript/mypostscript.tmpl b/xCAT-server/share/xcat/mypostscript/mypostscript.tmpl
index 88a5bb8dc..6ca03fc1c 100755
--- a/xCAT-server/share/xcat/mypostscript/mypostscript.tmpl
+++ b/xCAT-server/share/xcat/mypostscript/mypostscript.tmpl
@@ -46,6 +46,10 @@ export MASTER
 
 NODEROUTENAMES=#TABLE:noderes:$NODE:routenames#
 export NODEROUTENAMES
+
+MASTER_IP=#MASTER_IP_ADDR#
+export MASTER_IP
+
 #ROUTES_VARS_EXPORT#