anchor.diff:  %% Should we define these here or refer to the prim_net module
   -export_type([
                 address_info/0,
  +              ifaddrs/0,
                 name_info/0,
  +
  +              ifaddrs_flag/0,
  +              ifaddrs_flags/0,
   
                 name_info_flags/0,
                 name_info_flag/0,
  
positive.code: 
  %% ===========================================================================
  %%
  %% if_name2index - Mappings between network interface names and indexes:
  %%                 name -> idx
  %%
  
negative.code:          gethostname/0,
           getnameinfo/1, getnameinfo/2,
           getaddrinfo/1, getaddrinfo/2,
           getifaddrs/0,  getifaddrs/1,
  
           if_name2index/1,
           if_index2name/1,
  