Add dynamic local network api

scripts/lua/modules/lua_utils.lua

@@ -3062,9 +3062,22 @@ function table.clone(t, filter)
    return clone
 end
 
-function table.deepcopy(t)
-   local json = require("dkjson")
-   return json.decode(json.encode(t))
+-- TODO join the code with table.clone
+function table.deepcopy(orig)
+   local orig_type = type(orig)
+   local copy
+
+   if orig_type == 'table' then
+      copy = {}
+      for orig_key, orig_value in next, orig, nil do
+         copy[table.deepcopy(orig_key)] = table.deepcopy(orig_value)
+      end
+      setmetatable(copy, table.deepcopy(getmetatable(orig)))
+   else -- number, string, boolean, etc
+      copy = orig
+   end
+
+   return copy
 end
 
 function toboolean(s)