Ignore kavlan6 between grisou-48 and grisou-49

lib/refrepo/valid/data/homogeneity.yaml.erb

@@ -55,6 +55,7 @@ nancy:
     - ~gpu_devices.nvidia1.vbios_version
   grisou-49:
     - -kavlan.eth4
+    - -kavlan6.eth4
     - ~network_adapters.eth4.enabled
     - ~network_adapters.eth4.mountable
     - -network_adapters.eth4.rate