/usr/lib/perl5/Net/RawIP/udphdr.pm is in libnet-rawip-perl 0.25-1build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | package Net::RawIP::udphdr;
use strict;
use warnings;
our $VERSION = '0.24';
use Class::Struct qw(struct);
our @udphdr = qw(source dest len check data);
struct ( 'Net::RawIP::udphdr' => [map { $_ => '$' } @udphdr ] );
1;
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