CVE-2015-5869
The Neighbor Discovery (ND) protocol implementation in the IPv6 stack in Apple iOS before 9 allows remote attackers to reconfigure a hop-limit setting via a small hop_limit value in a Router Advertisement (RA) message.
Date published : 2015-09-18
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html