Public bug reported:
Binary package hint: linux-source
After enabling IPV6 privacy extension (with echo 2 >
/proc/sys/net/ipv6/conf/eth8/use_tempaddr)
ubuntu autoconfigs, as aspected, ipv6-privacy-extension-addresses and they
change every 60 seconds makeing outgoing connection droped every 60 seconds
(radvd running on 6to4 prefix with AdvPreferredLifetime 20 and
AdvValidLifetime 30).
After changing AdvValidLifetime to 300 in radvd (on the router) ubuntu starts
getting assigned more and more addresses up to about 15.
Changing AdvValidLifetime back to 30 lead ubuntu to deconfigure ALL
ipv6-privacy-extension-addresses addresses leaving the interface with only the
stateless address but interface is still configured to use privacy extension
but it's no longer used. So privacy is no longer ensured without any user
command but just some crafted ra packets.
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags: ipv6
--
bad router advertisement lead to disabilitation of ipv6 privacy extension
https://bugs.launchpad.net/bugs/381896
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