There seems to be a problem and I can`t figure it out.. This is the code: 
use strict;
use warnings;

system('/usr/bin/clear');
print "\n\n";
open(IN1,"/root/work/htb/banner");
open(HTB,">/root/work/htb/full");
my @head_htb=<IN1>;
close(IN1);
print HTB "@head_htb";

my $DEV = 'dev eth1';
my $count = 500;

my %special_subnets = (
   6 => [ 0, 1, 2],
   17 => [ 0, 1],
   19 => [ 0, 1, 2],
  );

     foreach my $oct1 ( 10 )  {
     foreach my $oct2 ( 1 .. 22 )  {
     my $third_octets_aref = $special_subnets{$oct2} || [ 0 ];
     foreach my $oct3 ( @{ $third_octets_aref } )  {
     foreach my $oct4 ( 1 .. 254 )  { # 253 ??
             print HTB generate_rule( $DEV, $count, $oct1, $oct2, $oct
+3, $oct4 );
             $count++;
             }
        }
   }
}

sub generate_rule {
my ( $dev, $count, @octets ) = @_;
my $ip = join '.', @octets;
#my $countx = '0x' . $count;
my $countx = sprintf '0x%04x', $count;

return <<"RULE";
        class add $dev parent 1:7 classid 1:$count rate 4kbit ceil 512
+Kbit burst 4kbit prio 1 quantum 2000
        filter add $dev protocol ip parent 1:0 prio 1 u32 match ip dst
+ $ip/32 match ip src 0.0.0.0/0 flowid 1:$count
        qdisc add $dev parent 1:$count handle $countx: pfifo limit 5
        RULE

 }
close (HTB);

[download]
And the error is : 
Can't find string terminator "RULE" anywhere before EOF at genhtb.pl l
+ine 44.

[download]
As far as I know a ENTER must be pressed after RULE so perl can reconize it as a string terminator..

In reply to Re^2: IP generation algorithm (tc) by giany
in thread IP generation algorithm (tc) by giany

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