Take the problem in chunks using /gc options. This assumes you only want the dns ips in the array, but you if you need the other bits that can be done using the same method.

#! perl -slw
use strict;

my $ipconfig = do{ local $/; <DATA> };

$ipconfig =~ m[DNS Servers . . . . . . . . :]gc
    and my @dnsIPs = $ipconfig =~ m[(?:\s*([0-9.]+)\n)]g;

print join '|', @dnsIPs;

__DATA__
Host Name . . . . . . . . . : LAPTOP.no.cox.net
DNS Servers . . . . . . . . : 205.152.132.211
                              181.171.2.11
                              10.10.10.1
Node Type . . . . . . . . . : Broadcast
[download]

Gives

P:\test>junk
205.152.132.211|181.171.2.11|10.10.10.1
[download]