/usr/lib/ is in libb-hooks-op-ppaddr-perl 0.03-2+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.20/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/B/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/B/Hooks/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/B/Hooks/OP/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/B/Hooks/OP/PPAddr/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/B/Hooks/OP/PPAddr/PPAddr.so
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/PPAddr.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/PPAddr/
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/PPAddr/Install/
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/PPAddr/Install/Files.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/B/Hooks/OP/PPAddr/Install/hook_op_ppaddr.h