use Net::DNS;
  my $res   = Net::DNS::Resolver->new;
  my $query = $res->query("example.com", "AAAA");
  if ($query) {
      foreach $rr (grep { $_->type eq 'AAAA' } $query->answer) {
          print $rr->address, "\n";
      }
  }
  else {
      warn "query failed: ", $res->errorstring, "\n";
  }
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