Re: [PATCH v4 net-next 1/2] net/ipv6: allow sysctl to change link-local address generation mode

From: Felix Jia <redacted>
Date: Thu, 26 Jan 2017 16:59:17 +1300

The address generation mode for IPv6 link-local can only be configured
by netlink messages. This patch adds the ability to change the address
generation mode via sysctl.

v1 -> v2
Removed the rtnl lock and switch to use RCU lock to iterate through
the netdev list.

v2 -> v3
Removed the addrgenmode variable from the idev structure and use the 
systcl storage for the flag.

Simplifed the logic for sysctl handling by removing the supported 
for all operation.

Added support for more types of tunnel interfaces for link-local 
address generation.

Based the patches from net-next.

v3 -> v4
Removed unnecessary whitespace changes.

Signed-off-by: Felix Jia <redacted>

Applied.