diff --git a/perl-xCAT/xCAT/NetworkUtils.pm b/perl-xCAT/xCAT/NetworkUtils.pm
index de5a3966b..2f699c8fa 100755
--- a/perl-xCAT/xCAT/NetworkUtils.pm
+++ b/perl-xCAT/xCAT/NetworkUtils.pm
@@ -1097,7 +1097,7 @@ sub my_if_netmap
 	1. If node can not be resolved, the return info will be like this:
 	[1, "The $node can not be resolved"].
 	2. If no IP found that matching the giving node, the return info will be:
-	[2, "No found matching IP for $node"].
+	[2, "The IP address of node $node is in an undefined subnet"].
 	3. If IP found:
 	[0,ip1,ip2,...] 
     Globals:
@@ -1151,7 +1151,7 @@ sub my_ip_facing
         push @rst, @ips;
     } else {
         $rst[0] = 2;
-        $rst[1] = "No found matching IP for $peer";
+        $rst[1] = "The IP address of node $peer is in an undefined subnet";
     }
     return @rst;
 }
@@ -1209,7 +1209,7 @@ sub my_ip_facing_aix
     else 
     {
         $rst[0] = 2;
-        $rst[1] = "No found matching IP for $peer";
+        $rst[1] = "The IP address of node $peer is in an undefined subnet";
     }
     return @rst;
 }
diff --git a/xCAT-server/lib/xcat/plugins/grub2.pm b/xCAT-server/lib/xcat/plugins/grub2.pm
index d7e9bd77c..e0bf2b70f 100644
--- a/xCAT-server/lib/xcat/plugins/grub2.pm
+++ b/xCAT-server/lib/xcat/plugins/grub2.pm
@@ -119,7 +119,7 @@ sub setstate {
                         $::callback->(
                             {
                             error => [
-                            "$myname: Unable to determine the image server for $node on service node $sn"
+                            "$myname: $ipfnd[1] on service node $sn"
                             ],
                             errorcode => [1]
                             }
@@ -131,7 +131,7 @@ sub setstate {
                 $::callback->(
                             {
                             error => [
-                            "$myname: Unable to determine the image server for $node"
+                            "$myname: $ipfnd[1]"
                             ],
                             errorcode => [1]
                             }
diff --git a/xCAT-server/lib/xcat/plugins/petitboot.pm b/xCAT-server/lib/xcat/plugins/petitboot.pm
index 4a09972d6..8e082dd95 100644
--- a/xCAT-server/lib/xcat/plugins/petitboot.pm
+++ b/xCAT-server/lib/xcat/plugins/petitboot.pm
@@ -122,7 +122,7 @@ sub setstate {
                       $::callback->(
                           {
                           error => [
-                          "$myname: Unable to determine the image server for $node on service node $sn"
+                          "$myname: $ipfnd[1] on service node $sn"
                           ],
                           errorcode => [1]
                           }
@@ -134,7 +134,7 @@ sub setstate {
               $::callback->(
                           {
                           error => [
-                          "$myname: Unable to determine the image server for $node"
+                          "$myname: $ipfnd[1]"
                           ],
                           errorcode => [1]
                           }
diff --git a/xCAT-server/lib/xcat/plugins/yaboot.pm b/xCAT-server/lib/xcat/plugins/yaboot.pm
index c77ebb2ea..7ba9458f4 100644
--- a/xCAT-server/lib/xcat/plugins/yaboot.pm
+++ b/xCAT-server/lib/xcat/plugins/yaboot.pm
@@ -114,7 +114,7 @@ sub setstate {
                       $::YABOOT_callback->(
                           {
                           error => [
-                          "$myname: Unable to determine the image server for $node on service node $sn"
+                          "$myname: $ipfnd[1] on service node $sn"
                           ],
                           errorcode => [1]
                           }
@@ -126,7 +126,7 @@ sub setstate {
               $::YABOOT_callback->(
                           {
                           error => [
-                          "$myname: Unable to determine the image server for $node"
+                          "$myname: $ipfnd[1]"
                           ],
                           errorcode => [1]
                           }