You could also use Data::Dumper in Terse mode to transform the contents of your array into a string which you can lc and eval to make all contents, including hash keys and values, lower case.
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

my @array1= (
        {
            'My_ID' => '86091',
            'IP' => '2001:DB8:0:0:0:0:0:0/128'
          },
          {
            'mY_id' => '86091',
            'iP' => '2001:DB8:0:0:0:0:0:0/32'
          }
       );

print Dumper(\@array1);

print "\nCompare with\n";
@array1 = @{lowercase(\@array1)};#Dereference array ref to array
print Dumper(\@array1);

sub lowercase{
    my $orig_aref = shift;
    local $Data::Dumper::Terse = 1; #Eliminate '$VAR1 = '
    my $string = Dumper($orig_aref); #Stringify contents of data struc
+ture
    
    my $arefmod = eval lc($string); #Make all data lower case and eval
+uate
    return $arefmod;
}

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"It is dangerous to understand new things too quickly." — Josiah Warren

In reply to Re: How can we compare two hashed with each other for case insensitive data? by d5e5
in thread How can we compare two hashed with each other for case insensitive data? by dipesh777

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