anchor.diff:  -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
   	 init_per_group/2,end_per_group/2,
   	 init_per_testcase/2, end_per_testcase/2]).
  --export([basic/1, resolve/1, edns0/1, txt_record/1, files_monitor/1]).
  +-export([basic/1, resolve/1, edns0/1, txt_record/1, files_monitor/1,
  +	 last_ms_answer/1]).
   -export([
   	 gethostbyaddr/0, gethostbyaddr/1,
   	 gethostbyaddr_v6/0, gethostbyaddr_v6/1,
  
positive.code: 
  all() -> 
      [basic, resolve, edns0, txt_record, files_monitor,
       gethostbyaddr, gethostbyaddr_v6, gethostbyname,
       gethostbyname_v6, getaddr, getaddr_v6, ipv4_to_ipv6,
       host_and_addr].
  
negative.code:     ok.
  
  %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
  last_ms_answer(doc) ->
      ["Answer just when timeout is triggered (OTP-9221)"];
  last_ms_answer(Config) when is_list(Config) ->
      NS = ns(Config),
      Name = "ns.otptest",
      %%IP = {127,0,0,254},
      Time = inet_db:res_option(timeout) div inet_db:res_option(retry),
      PSpec = proxy_start(last_ms_answer, NS),
      ProxyNS = proxy_ns(PSpec),
      %%
      %% resolve; whith short timeout to trigger Timeout =:= 0 in inet_res
      {error,timeout} =
  	inet_res:resolve(
  	  Name, in, a, [{nameservers,[ProxyNS]},verbose], Time + 10),
      %%
      proxy_wait(PSpec),
      ok.
  
  %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %% Compatibility tests. Call the inet_SUITE tests, but with
  %% lookup = [file,dns] instead of [native]
  
  