Shengjing Zhu 59f9976017 pkg/ip: don't write to /proc/sys if ipforward enabled
This enables setup in a container env like systemd nspawn
where /proc/sys is mouted as read only.

Signed-off-by: Shengjing Zhu <i@zhsj.me>
2018-01-18 01:52:49 +08:00
..
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