Hi Ikegami , I have tried out the below. 
 #!/usr/bin/perl
open(HANDLE , "result3.txt") || die("Could not open file!");
while(<HANDLE>)
{
chomp;
use Socket qw( inet_aton inet_ntoa );

sub fr_dotted { unpack  'N', inet_aton @_ ? $_[0] : $_ }
sub to_dotted { inet_aton  pack  'N', @_ ? $_[0] : $_ }

my $next = fr_dotted('100.1.3.41');
my $max  = fr_dotted('100.1.3.50');

die if $next > $max;
my $new = $next++;
$new1 = to_dotted($new);
print $new1;
}
close(HANDLE);

[download]
But that does not give me the desired results. Am I doing it correct ?

In reply to Re^2: Automatic IP address Generation by ajd335
in thread Automatic IP address Generation by ajd335

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