[PATCH 4.10 118/129] ipv6: initialize route null entry in addrconf_init()

4.10-stable review patch. If anyone has any objections, please let me know. -- From: WANG Cong [ Upstream commit 2f460933f58eee3393aba64f0f6d14acb08d1724 ] Andrey reported a crash on init_net.ipv6.ip6_null_entry->rt6i_idev since it is always NULL.

[PATCH 4.10 118/129] ipv6: initialize route null entry in addrconf_init()

4.10-stable review patch. If anyone has any objections, please let me know. -- From: WANG Cong [ Upstream commit 2f460933f58eee3393aba64f0f6d14acb08d1724 ] Andrey reported a crash on init_net.ipv6.ip6_null_entry->rt6i_idev since it is always NULL. This is clearly wrong, we