In article <5e50b19fbb757f080905.1206305170@pirzuine> (at Sun, 23 Mar 2008 21:46:10 +0100), Benoit Boissinot <benoit.boissinot@ens-lyon.org> says:

quoted text
> IPv6: only update the lifetime of the relevant temporary address
> 
> When receiving a prefix information from a routeur, only update the lifetimes
> of the temporary address associated with that prefix.
> Otherwise if one deprecated prefix is advertized, all your temporary addresses
> will become deprecated.
> 
> Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>

I generally agree.

quoted text
> diff -r dd125a7f8696 -r 5e50b19fbb75 net/ipv6/addrconf.c
> --- a/net/ipv6/addrconf.c	Sat Mar 22 00:50:21 2008 +0100
> +++ b/net/ipv6/addrconf.c	Sat Mar 22 00:41:39 2008 +0100
> @@ -1832,6 +1832,10 @@
>  				 * when processing a Prefix Information Option.
>  				 */
>  				spin_lock(&ift->lock);
> +				if (ifp != ift->ifpub) {
> +					spin_unlock(&ift->lock);
> +					continue;
> +				}
>  				flags = ift->flags;
>  				if (ift->valid_lft > valid_lft &&
>  				    ift->valid_lft - valid_lft > (jiffies - ift->tstamp) / HZ)

I think you can compare ift->ifpub outside the lock here.

--yoshfuji
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