On Mon, Jan 08, 2018 at 10:34:00AM -0800, Wei Wang wrote:
> From: Wei Wang <wei...@google.com>
> 
> In the current code, when creating a new fib6 table, tb6_root.leaf gets
> initialized to net->ipv6.ip6_null_entry.
> If a default route is being added with rt->rt6i_metric = 0xffffffff,
> fib6_add() will add this route after net->ipv6.ip6_null_entry. As
> null_entry is shared, it could cause problem.
> 
> In order to fix it, set fn->leaf to NULL before calling
> fib6_add_rt2node() when trying to add the first default route.
> And reset fn->leaf to null_entry when adding fails or when deleting the
> last default route.
Thanks for the fix!

Acked-by: Martin KaFai Lau <ka...@fb.com>

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