fix dhcp leak

network.yaml

@@ -119,6 +119,26 @@
             timeout 300;
 
           dest: /etc/dhcp/dhclient.conf
+      - name: remove dhclient resolved hook
+        become: true
+        file:
+          path: /etc/dhcp/dhclient-enter-hooks.d/resolved
+          state: absent
+      - name: dhclient hook
+        become: true
+        copy:
+          content: |
+            make_resolv_conf() {
+              return 0
+            }
+            new_routers() {
+              return 0
+            }
+            new_host_name() {
+              return 0
+            }
+          dest: /etc/dhcp/dhclient-enter-hooks.d/nextgen-router
+          mode: 0755
       - name: pppoe password
         become: true
         blockinfile: