Public bug reported:

Binary package hint: linux-source-2.6.24

If two prefixes are advertized on a link, one with a preferred_lifetime of 0 
(usually the case after a renumbering), then ipv6 temporary addresses won't 
work.
The reason is that when router advertisement is processed, they update all the 
temporary addresses and not just the relevant one.
Furthermore, no temporary addresses should be created with a preferred lifetime 
of 0.

patches are available here:
http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commit;h=c6fbfac2e61c9a8617f64b93e8c990b8d864bce5
http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commit;h=eac55bf97094f6b64116426864cf4666ef7587bc

please backport it, this configuration affects the second biggest french
ISP (more than 1M subscribers) and without it temporary address is
useless.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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ipv6 temporary address creation fails
https://bugs.launchpad.net/bugs/210742
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