Stanislav Fomichev [off-list ref] wrote:

Going forward skb_dst_set will assert that skb dst_entry
is empty during skb_dst_set. skb_dst_reset is added to reset
existing entry without doing refcnt. Switch to skb_dst_reset
in ip[6]_route_me_harder and add a comment on why it's safe
to skip skb_dst_restore.

Acked-by: Florian Westphal <fw@strlen.de>