Reduce the risk of misidentification of incoming traffic by verifying destination hostname when resolving incoming internet traffic; Use /proc/<pid>/root/etc/hostname for IP to hostname resolution as an alternative to /proc/<pid>/environ

Reduce the risk of misidentification of incoming traffic by verifying destination hostname when resolving incoming internet traffic; Use /proc/<pid>/root/etc/hostname for IP to hostname resolution as an alternative to /proc/<pid>/environ #527