On Tue, Jul 29, 2014 at 2:29 AM, zhuyj <zyjzyj2000@xxxxxxxxx> wrote:
Hi,allWell, they are already independent, not shared, just that the initial
I did a test on kernel3.16 rc6:
root@qemu1:~# echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
root@qemu1:~# echo 1 > /proc/sys/net/ipv4/conf/all/forwarding
root@qemu1:~# ip netns list
root@qemu1:~# ip netns add fib1
root@qemu1:~# ip netns exec fib1 bash
root@qemu1:~# cat /proc/sys/net/ipv6/conf/all/forwarding
root@qemu1:~# cat /proc/sys/net/ipv4/conf/all/forwarding
The behavior of ipv4 and ipv6 is very inconsistent. I checked
the kernel source code. I found that from this patch
[ipv6: fix bad free of addrconf_init_net], the above difference
Since a net namespace is independent to another. That is, there
is no any relationship between the net namespaces. So the behavior
of ipv4 is not correct.
value is duplicated from init_net for IPv4.
This change might break existing applications which rely on this
behavior, but given IPv6 change is almost the same, I think it's ok.
BTW, you need to submit a patch as normal, instead of as an attachment.