/usr/share/doc/strongswan-tnc-pdp/NEWS.Debian.gz is in strongswan-tnc-pdp 5.6.2-1ubuntu2.3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/strongswan-tnc-pdp/../libstrongswan/NEWS.Debian.gz