I see various options have been discussed in depth. I just want to say that it is possible to capture all the IP numbers between DNS and Node Type with a Perl one-liner. I have quickly written the sample below to show that this can be done with a regular expression (or two).

use strict;
use Data::Dumper;

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

my @dns = map { /(\S+)/g } # grab IP numbers between DNS .. Node
              $config =~ m/DNS[^:]*:\s+([^N]*)\nNode/gs;

print Dumper(\@dns);


__DATA__
Host Name . . . . . . . . . : LAPTOP.no.cox.net
DNS Servers . . . . . . . . : 205.152.132.211
                              181.171.2.11
                              10.10.10.1
Node Type . . . . . . . . . : Broadcast
                              Point to Point

Host Name . . . . . . . . . : DESKTOP.no.cox.net
DNS Servers . . . . . . . . : 123.123.123.123
                              192.168.0.112
                              10.10.10.3
Node Type . . . . . . . . . : Broadcast
                              Point to Point
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And the output -

$VAR1 = [
          '205.152.132.211',
          '181.171.2.11',
          '10.10.10.1',
          '123.123.123.123',
          '192.168.0.112',
          '10.10.10.3'
        ];
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