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my $ignore =
    qr( 192\.168\.188\.3 |
...
        192\.168\.139\.50 |
        192\.168\.139\.198 |
        192\.168\.132\.101 )x ;

use Regex::PreSuf;
my @ignore =
...
        192.168.139.198
        192.168.132.101 );
my $ignorex = presuf( map { s|\.|\\.|g } @ignore );