We forgot to update ip6erspan version related info when changing link,
which will cause setting new hwid failed.
Reported-by: NJianlin Shi <jishi@redhat.com>
Fixes: 94d7d8f2 ("ip6_gre: add erspan v2 support")
Signed-off-by: NHangbin Liu <liuhangbin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>