here it is. 
my ($new_sock, $client_addr) = $sock->accept();
my $peerhost = $sock->peeraddr();
my $addr = inet_ntoa($peerhost);
print "$addr\n";
print $client_addr\n";
 while(<$new_sock>) {
 print $_;
 }
 close($sock);

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In reply to Re^4: IO Socket - Detect inbound IP by Anonymous Monk
in thread IO Socket - Detect inbound IP by sans-clue

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