#324 use a (better) host group for internal localnet filter

share/config.yml

@@ -118,7 +118,11 @@ login_logo: ""
 
 # mibhome is discovered from environment
 # mibdirs defaults to contents of mibhome
-host_groups: {}
+host_groups:
+  __LOCAL_ADDRESSES__:
+    - '::1'
+    - 'fe80::/10'
+    - '127.0.0.0/8'
 device_identity: []
 community: ['public']
 community_rw: ['private']
@@ -214,7 +218,7 @@ workers:
 dns:
   max_outstanding: 50
   hosts_file: '/etc/hosts'
-  no: ['fe80::/64','169.254.0.0/16']
+  no: ['group:__LOCAL_ADDRESSES__','169.254.0.0/16']
 
 #schedule:
 #  discoverall: