Have you considered using Regexp::Common::net to capture those IPs?

use strict;
use warnings;
use Regexp::Common qw/net/;

while (<DATA>) {
    if ( my ( $firstIP, $secondIP ) = /($RE{net}{IPv4})/g ) {
        print "FirstIP: $firstIP\nSecondIP: $secondIP\n\n";
    }
}

__DATA__ 
Sample data Mar 10 07:42:38 DR-FW-1 : %ASA-6-305011: Built dynamic UDP
+ translation from inside:172.28.17.130/3324 to outside(internet-traff
+ic):69.176.102.83/24295
Sample data Mar 10 07:42:38 DR-FW-1 : %ASA-6-305011: Built dynamic UDP
+ translation from inside:155.0.42.42/3324 to outside(internet-traffic
+):71.200.20.7/24295

[download]

Output:

FirstIP: 172.28.17.130
SecondIP: 69.176.102.83

FirstIP: 155.0.42.42
SecondIP: 71.200.20.7

[download]

In reply to Re: Using variable to hold regex expression by Kenosis
in thread Using variable to hold regex expression by salatconed

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