anchor.diff:                  error -> 
                       [{local_host6, nksip_lib:to_binary(Host)}|Opts]
               end;
  -        no_100 ->
  +        {no_100, true} ->
               [{no_100, true}|Opts];
   
           {plugins, List} when is_list(List) ->
  
positive.code:             [{store_trace, Trace}|Opts];
  
          % Unknown options
          {Name, Value} ->
              case nksip_config:parse_config(Name, Value) of
                  {ok, Value1} -> 
  
negative.code:             end;
          {register_expires, Expires} when is_integer(Expires), Expires>0 ->
              [{register_expires, Expires}|Opts];
          {registrar, true} ->
              [{registrar, true}|Opts];
          {trace, Trace} when is_boolean(Trace) ->
              [{trace, Trace}|Opts];
  