[dhcp] Configure /etc/default/isc-dhcp-server

roles/isc-dhcp-server/tasks/main.yml

@@ -8,6 +8,14 @@
   retries: 3
   until: apt_result is succeeded
 
+- name: Configure /etc/default/isc-dhcp-server
+  template:
+    src: default/isc-dhcp-server.j2
+    dest: /etc/default/isc-dhcp-server
+    mode: 0600
+  notify:
+    - restart dhcp server
+
 - name: Configure isc-dhcp-server
   template:
     src: dhcp/dhcpd.conf.j2

roles/isc-dhcp-server/templates/default/isc-dhcp-server.j2

@@ -0,0 +1,18 @@
+# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)
+
+# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).
+#DHCPDv4_CONF=/etc/dhcp/dhcpd.conf
+#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf
+
+# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).
+#DHCPDv4_PID=/var/run/dhcpd.pid
+#DHCPDv6_PID=/var/run/dhcpd6.pid
+
+# Additional options to start dhcpd with.
+#	Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
+#OPTIONS=""
+
+# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
+#	Separate multiple interfaces with spaces, e.g. "eth0 eth1".
+INTERFACESv4="{{ dhcp | json_query('subnets[].interface[]') | join(" ") }}"
+INTERFACESv6=""