From $URL : Due to the way the Linux kernel handles the creation of IPv6 temporary addresses a malicious LAN user can remotely disable them altogether which may lead to privacy violations and information disclosure. Reference: -> http://seclists.org/oss-sec/2012/q4/292 -> http://seclists.org/oss-sec/2013/q1/92
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=4b08a8f1bd8cb4541c93ec170027b4d0782dab52
There are no longer any 2.x or <3.8 kernels available in the repository with the exception of sys-kernel/xbox-sources which is unsupported by security.