don't send /64 to upstream

vyos.conf.j2

@@ -1359,7 +1359,7 @@ policy {
     {% for prefix_list_name, prefix_data in salt['pillar.get']("policy:prefix-list",{}).items() %}
     prefix-list6 {{ prefix_list_name }} {
         {% if 'bgpq3' in prefix_data %}
-            {% set jsonblob = salt['cmd.run']('/tmp/bgpq3 -m 64 -R 64 -A -6 -j ' + prefix_data["bgpq3"]["IPv6"], env={'BIND_ADDR':pillar['loopback']['IPv4'], 'BIND_ADDR6':pillar['loopback']['IPv6'], 'LD_PRELOAD':'/tmp/bind.so'})|load_json %}
+            {% set jsonblob = salt['cmd.run']('/tmp/bgpq3 -m 64 -A -6 -j ' + prefix_data["bgpq3"]["IPv6"], env={'BIND_ADDR':pillar['loopback']['IPv4'], 'BIND_ADDR6':pillar['loopback']['IPv6'], 'LD_PRELOAD':'/tmp/bind.so'})|load_json %}
             {% for prefix in jsonblob.NN %}
             rule {{ loop.index }} {
                 action permit