Node skip on no IF in reclass
diff --git a/cfg_checker/modules/network/checker.py b/cfg_checker/modules/network/checker.py
index f40e1d3..5989a39 100644
--- a/cfg_checker/modules/network/checker.py
+++ b/cfg_checker/modules/network/checker.py
@@ -96,7 +96,15 @@
                 continue
             # get the reclass value
             _pillar = self.nodes[node]['pillars']['linux']['network']
-            _pillar = _pillar['interface']
+            # we should be ready if there is no interface in reclass for a node
+            # for example on APT node
+            if 'interface' in _pillar:
+                _pillar = _pillar['interface']
+            else:
+                logger_cli.info("...skipped '{}', no IF in reclass".format(
+                    node
+                ))
+                continue
             for _if_name, _if_data in _pillar.iteritems():
                 if 'address' in _if_data:
                     _if = ipaddress.IPv4Interface(
diff --git a/cfg_checker/nodes.py b/cfg_checker/nodes.py
index 30de749..b2bfd88 100644
--- a/cfg_checker/nodes.py
+++ b/cfg_checker/nodes.py
@@ -83,6 +83,18 @@
             )
         )
 
+    def skip_node(self, node):
+        # Add node to skip list
+        # Fro example if it is fails to comply with the rules
+
+        # check if we know such node
+        if node in self.nodes.keys() and node not in self.skip_list:
+            # yes, add it
+            self.skip_list.append(node)
+            return True
+        else:
+            return False
+
     def get_nodes(self):
         return self.nodes