anchor.diff:  	    _ ->
   		[]
   	end,
  +
       BufSz = 
   	case (catch inet:getopts(Id, [recbuf, sndbuf, buffer])) of
   	    {ok, Sz} ->
  
positive.code: 
  %%%-------------------------------------------------------------------
  
  % get_opt(Key, Opts) ->
  %     ?vtrace("get option ~w", [Key]),
  %     snmp_misc:get_option(Key, Opts).
  
  get_opt(Opts, Key, Def) ->
      ?vtrace("get option ~w with default ~p", [Key, Def]),
  
negative.code:     end.
  
  
  get_socket_info(Id) when is_port(Id) ->
      Info = inet:info(Id),
  
      IfList = 
  	case (catch inet:getif(Id)) of
  	    {ok, IFs} ->
  