ipv6: addrconf: don't use rtnl mutex in RTM_GETADDR
Similar to the previous patch, use the device lookup functions that bump device refcount and flag this as DOIT_UNLOCKED to avoid rtnl mutex. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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