anchor.diff:       t_fdconnect,
        t_implicit_inet6,
        t_accept_inet6_tclass,
  +     {group, t_link_local}
  +    ].
  +
  +t_link_local_cases() ->
  +    [
        t_simple_local_sockaddr_in_send_recv,
        t_simple_link_local_sockaddr_in_send_recv,
        t_simple_local_sockaddr_in6_send_recv,
  
positive.code:      {t_recv,               [], t_recv_cases()},
       {t_shutdown,           [], t_shutdown_cases()},
       {t_misc,               [], t_misc_cases()},
       {t_local,              [], t_local_cases()},
       {s_misc,               [], s_misc_cases()}
      ].
  
negative.code: -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,
  
  	 t_connect_timeout/1, t_accept_timeout/1,
  