ipv6: exit early in addrconf_notify() if IPv6 is disabled
If IPv6 is explicitly disabled before the interface comes up, it makes no sense to continue when it comes up, even just print a message. (I am not sure about other cases though, so I prefer not to touch) Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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