diff --git a/xCAT-server/lib/xcat/plugins/dhcp.pm b/xCAT-server/lib/xcat/plugins/dhcp.pm
index 93007eb4e..85ebf4de4 100644
--- a/xCAT-server/lib/xcat/plugins/dhcp.pm
+++ b/xCAT-server/lib/xcat/plugins/dhcp.pm
@@ -1873,6 +1873,7 @@ sub addnet
 
                        # $lstatements = 'if exists gpxe.bus-id { filename = \"\"; } else if exists client-architecture { filename = \"xcat/xnba.kpxe\"; } '.$lstatements;
         push @netent, "    if option user-class-identifier = \"xNBA\" and option client-architecture = 00:00 { #x86, xCAT Network Boot Agent\n";
+        push @netent, "       always-broadcast on;\n";
         push @netent, "       filename = \"http://$tftp/tftpboot/xcat/xnba/nets/".$net."_".$maskbits."\";\n";
         push @netent, "    } else if option user-class-identifier = \"xNBA\" and option client-architecture = 00:09 { #x86, xCAT Network Boot Agent\n";
         push @netent, "       filename = \"http://$tftp/tftpboot/xcat/xnba/nets/".$net."_".$maskbits.".uefi\";\n";