diff --git a/xCAT-server/lib/xcat/plugins/networks.pm b/xCAT-server/lib/xcat/plugins/networks.pm
index 01c24af7b..d4db7d8a4 100644
--- a/xCAT-server/lib/xcat/plugins/networks.pm
+++ b/xCAT-server/lib/xcat/plugins/networks.pm
@@ -507,7 +507,6 @@ sub donets
                     # check if this netname is already defined
                     if ( $netname eq $netn ) {
                         $netnamematch = 1;
-                        $callback->({ warning => "The network entry \'$netname\' already exists in xCAT networks table. Cannot create a definition for \'$netname\'" });
                         last;
                     }
                     # split definition mask
@@ -524,10 +523,6 @@ sub donets
                     }
                 }
 
-                # if this net entry exists, go to next line in networks table
-                if ($netnamematch) {
-                    last;
-                }
                 # get mtu value
                 my $mtu;
                 my @rowm;
@@ -553,6 +548,11 @@ sub donets
                         push @{ $rsp->{data} }, "    mtu=$mtu";                      
                     }
                 } else {
+                    # if this net entry exists, go to next line in networks table
+                    if ($netnamematch) {
+                        $callback->({ warning => "The network entry \'$netname\' already exists in xCAT networks table. Cannot create a definition for \'$netname\'" });
+                        last;
+                    }
                     if (!$foundmatch) {
                         $nettab->setAttribs({ 'net' => $net, 'mask' => $mask }, { 'netname' => $netname, 'mgtifname' => $mgtifname, 'gateway' => $gw, 'mtu' => $mtu });
                     }