/usr/lib/x86_64-linux-gnu/ is in libnet-rawip-perl 0.25-2build2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.22/
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/generichdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/iphdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/tcphdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/ethhdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/libpcap.pod
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/udphdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/opt.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP/icmphdr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Net/RawIP.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Net/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Net/RawIP/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Net/RawIP/autosplit.ix
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Net/RawIP/RawIP.so