anchor.diff:          {ok, Value} ->
               Value
       end.
  +%reconcile_service({Service, {_VIP, Backends}}, State) ->
   transition_service(Service, VIPsOld, VIPsNew, State) ->
       Key = service_address(Service),
  -    OldBackends = find_or_default(Key, VIPsOld, []),
  -    NewBackends = orddict:fetch(Key, VIPsNew),
  -    update_backends(Service, OldBackends, NewBackends, State).
  -
  -update_backends(Service, OldBackends, NewBackends, State) ->
  -    BackendsToDelete = ordsets:subtract(OldBackends, NewBackends),
  -    BackendsToAdd = ordsets:subtract(NewBackends, OldBackends),
  -    lists:foreach(fun(BE) -> add_backend_to_service(BE, Service, State) end, BackendsToAdd),
  -    lists:foreach(fun(BE) -> delete_backend(BE, Service, State) end, BackendsToDelete).
  +    case  {find_or_default(Key, VIPsOld, []), find_or_default(Key, VIPsNew, [])} of
  +        {Same, Same} ->
  +            ok;
  +        {_, NewBackends} ->
  +            reconcile_service(Service, NewBackends, State)
  +    end.
   
   delete_old_vips_and_interfaces(VIPsOld, VIPsNew, State) ->
       InstalledServices = installed_services(State),
  
positive.code:         end,
          InstalledServices).
  
  reconcile_service({Service, {_VIP, Backends}}, State) ->
      lager:info("Reconciling service: ~p", [Service]),
      InstalledBackends = installed_backends(Service, State),
      BackendsToAdd = backends_to_add(InstalledBackends, Backends),
      lists:foreach(fun(BE) -> add_backend_to_service(BE, Service, State) end, BackendsToAdd),
      BackendsToDelete = backends_to_delete(InstalledBackends, Backends),
      lists:foreach(fun(BE) -> delete_backend(BE, Service, State) end, BackendsToDelete).
  
  backends_to_add(InstalledBackends, Backends0) ->
      NormalizedInstalledBackends0 = lists:map(fun backend_address/1, InstalledBackends),
  
negative.code:     create_new_vips_and_interfaces(VIPsOld, VIPsNew, State),
      transition_services(VIPsOld, VIPsNew, State).
  
  %% Changes destinations
  transition_services(VIPsOld, VIPsNew, State) ->
      InstalledServices = installed_services(State),
      lists:foreach(fun(Service) -> transition_service(Service, VIPsOld, VIPsNew, State) end, InstalledServices).
  