You could use Sys::HostIP:

#!/usr/local/bin/perl

use strict;
use warnings;
use Data::Dumper;
use Sys::HostIP;

my $ip_address   = Sys::HostIP->ip;
my $ip_addresses = Sys::HostIP->ips;
my $interfaces   = Sys::HostIP->interfaces;

print Dumper($ip_address, $ip_addresses, $interfaces, "\n");
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