diff --git a/xCAT-server/lib/xcat/plugins/debian.pm b/xCAT-server/lib/xcat/plugins/debian.pm
index 630f7f012..c0bfa3fcd 100755
--- a/xCAT-server/lib/xcat/plugins/debian.pm
+++ b/xCAT-server/lib/xcat/plugins/debian.pm
@@ -837,7 +837,11 @@ sub mkinstall
             if ($maxmem) {
                 $kcmdline.=" mem=$maxmem";
             }
-            my $net_params = xCAT::NetworkUtils->gen_net_boot_params($ent->{installnic},$ent->{primarynic},$macent->{mac});
+
+            # parse Mac table to get one mac address in case there are multiples.
+            $mac = xCAT::Utils->parseMacTabEntry($macent->{mac},$node);
+
+            my $net_params = xCAT::NetworkUtils->gen_net_boot_params($ent->{installnic},$ent->{primarynic},$mac);
             if (exists($net_params->{nicname})) {
                 $kcmdline .= " netcfg/choose_interface=". $net_params->{nicname};
             } elsif (exists($net_params->{mac})) {