knot: rewrite role

roles/knot/defaults/main.yaml

@@ -1,4 +1,15 @@
 ---
+knot_version: ""
+
+# XDP datapath options
+# Note: rfc2136 aka nsupdate aka dynamic update 
+# not working with XDP
+knot_xdp: false
+knot_xdp_interface: "eth0"
+
+# QUIC protocol
+knot_quic: false
+
 knot_conf: |
   # This is a sample of a minimal configuration file for Knot DNS.
   # See knot.conf(5) or refer to the server documentation.
@@ -8,7 +19,16 @@ knot_conf: |
       user: knot:knot
       listen: [ 0.0.0.0@53, ::@53 ]
       udp-max-payload: 1232
-  
+  {% if knot_quic %}
+      listen-quic: [ 0.0.0.0, :: ]
+  {% endif %}
+  {% if knot_xdp %}
+  xdp:
+      listen: {{ knot_xdp_interface }}
+      udp: true
+      tcp: true
+      quic: true
+  {% endif %}
   log:
     - target: syslog
       any: debug