fix filter index to use parent child prefix from schema if prefix size is not specified

.idea/.idea.cloud.insecurity.docker/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

cloud.insecurity.docker.ipam/Scope.cs

@@ -187,11 +187,10 @@ namespace cloud.insecurity.docker.ipam
                 
                 try
                 {
-                    
-                    var test = Db.GetCollection("Scopes").FindAll();
-                    
-                     newScope = Db.GetCollection<Scope>("Scopes")
-                         .Find(s => s.Id == GetUniqueId(scope.network, scope.prefix)).First();
+                    newScope = Db.GetCollection<Scope>("Scopes")
+                        .Find(s => s.Id == GetUniqueId(scope.network, (scope.prefix != 0) 
+                            ? scope.prefix 
+                            : (int)parent.Schema.child_prefix)).SingleOrDefault();
                 }
                 catch(Exception ex)
                 {