kea: T7913: Fixes for ping-check handling

- Kea docs state multi-threaded mode is required for ping checking.
- Parent scope needs enabling if shared-network/subnet has ping-check enabled.

1 files changed, 6 insertions, 1 deletions

diff --git a/data/templates/dhcp-server/kea-dhcp4.conf.j2 b/data/templates/dhcp-server/kea-dhcp4.conf.j2
index 7302c2cad..8519689a9 100644
--- a/data/templates/dhcp-server/kea-dhcp4.conf.j2
+++ b/data/templates/dhcp-server/kea-dhcp4.conf.j2
@@ -28,6 +28,9 @@
             "persist": true,
             "name": "{{ lease_file }}"
         },
+        "multi-threading": {
+            "enable-multi-threading": true
+        },
 {% if client_class is vyos_defined %}
         "client-classes": {{ client_class | kea_client_class_json }},
 {% endif %}
@@ -75,16 +78,18 @@
                 }
             },
 {% endif %}
+{% if any_ping_check is vyos_defined %}
             {
                 "library": "/usr/lib/{{ machine }}-linux-gnu/kea/hooks/libdhcp_ping_check.so",
                 "parameters": {
-                    "enable-ping-check" : false,
+                    "enable-ping-check" : true,
                     "min-ping-requests" : 1,
                     "reply-timeout" : 100,
                     "ping-cltt-secs" : 60,
                     "ping-channel-threads" : 0
                 }
             },
+{% endif %}
             {
                 "library": "/usr/lib/{{ machine }}-linux-gnu/kea/hooks/libdhcp_lease_cmds.so",
                 "parameters": {}