diff --git a/xCAT-server/lib/xcat/plugins/yaboot.pm b/xCAT-server/lib/xcat/plugins/yaboot.pm
index 00ad07a26..917f90a97 100644
--- a/xCAT-server/lib/xcat/plugins/yaboot.pm
+++ b/xCAT-server/lib/xcat/plugins/yaboot.pm
@@ -162,6 +162,8 @@ sub setstate {
    my $pname = sprintf("%02x%02x%02x%02x",@ipa);
    #special case for sles 11
    my $mac = lc($machash{$node}->[0]->{mac});
+   $mac =~ s/!.*//;
+   $mac =~ s/|.*//;
    if (! (grep /\:/, $mac) ) {
       $mac =~ s/(..)(..)(..)(..)(..)(..)/$1:$2:$3:$4:$5:$6/;
    }