anchor.diff:      lease_list:update_lease_in_dht_node_state(L2, State, active, split_reply_step4);
   
   on({l_on_cseq, split_reply_step4, L1, R1, R2, Keep, ReplyTo, PostAux,
  -    {qwrite_deny, _ReqId, _Round, L2, {content_check_failed, Reason}}}, State) ->
  +    {qwrite_deny, _ReqId, _Round, L2, {content_check_failed, 
  +                                       {Reason, _Current, _Next}}}}, State) ->
       % @todo
       log:pal("split fourth step: ~p~n", [Reason]),
       case Reason of
  
positive.code: 
  on({l_on_cseq, merge_reply_step2, L1, ReplyTo,
      {qwrite_deny, _ReqId, Round, L2,
       {content_check_failed, Reason}}}, State) ->
      % @todo if success update lease in State
      log:pal("merge step2 failed~n~w~n~w~n~w~n", [Reason, L1, L2]),
      case Reason of
          unexpected_range ->
              % give up, there was probably a concurrent merge
  
negative.code:                                               merge_reply_step3);
  
  on({l_on_cseq, merge_reply_step4, L1, ReplyTo,
      {qwrite_deny, _ReqId, Round, L2, {content_check_failed, 
                                        {Reason, _Current, _Next}}}}, State) ->
      % @todo if success update lease in State
      log:pal("merge step4 failed~n~w~n~w~n~w~n", [Reason, L1, L2]),
      % retry?
  