diff --git a/xCAT-server/lib/xcat/plugins/networks.pm b/xCAT-server/lib/xcat/plugins/networks.pm
index 6a05726b0..62d235033 100644
--- a/xCAT-server/lib/xcat/plugins/networks.pm
+++ b/xCAT-server/lib/xcat/plugins/networks.pm
@@ -391,7 +391,7 @@ sub donets
         foreach (@ip6table)
         {
             my @ent = split /\s+/, $_;
-            if ($ent[0] eq 'fe80::/64' or $ent[0] eq 'unreachable' or $ent[1] eq 'via') {
+            if ($ent[0] =~ m/^fe80::/ or $ent[0] eq 'unreachable' or $ent[1] eq 'via') {
 
                 #Do not contemplate link-local, unreachable, or gatewayed networks further
                 #DHCPv6 relay will be manually entered into networks as was the case for IPv4