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@rikonor
Last active September 14, 2022 13:48
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Generate empty mmdb files
# run 'mcpan MaxMind::DB::Writer::Tree' beforehand
use MaxMind::DB::Writer::Tree;
use Net::Works::Network;
my %types = ();
my $tree = MaxMind::DB::Writer::Tree->new(
ip_version => 4,
record_size => 24,
database_type => 'Empty',
description => { en => 'Empty database' },
map_key_type_callback => sub { $types{ $_[0] } },
);
open my $fh, '>:raw', 'GeoLite2-Empty.mmdb';
$tree->write_tree($fh);
mmdblookup \
--file GeoLite2-Empty.mmdb \
--ip 0.0.0.0
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