Fix gc_thres values

Sem-Ver: feature
Change-Id: Id3c4be2e4307f516907e9cad90aaf954d36d0c4c
diff --git a/roles/kubernetes/defaults/main.yml b/roles/kubernetes/defaults/main.yml
index 538a6c9..79c2a9a 100644
--- a/roles/kubernetes/defaults/main.yml
+++ b/roles/kubernetes/defaults/main.yml
@@ -47,11 +47,17 @@
   - name: net.ipv4.conf.all.rp_filter
     value: 0
   - name: net.ipv4.neigh.default.gc_thresh1
-    value: 4096
+    value: 128
   - name: net.ipv4.neigh.default.gc_thresh2
-    value: 8192
+    value: 28872
   - name: net.ipv4.neigh.default.gc_thresh3
-    value: 16384
+    value: 32768
+  - name: net.ipv6.neigh.default.gc_thresh1
+    value: 128
+  - name: net.ipv6.neigh.default.gc_thresh2
+    value: 28872
+  - name: net.ipv6.neigh.default.gc_thresh3
+    value: 32768
 
                                                                    # ]]]
 # .. envvar:: kubernetes_control_plane_group [[[