Messages in this thread | | | From | Zhu Yanjun <> | Subject | [PATCH V2 0/1] ipv4: net namespace does not inherit network configurations | Date | Thu, 21 Aug 2014 10:32:00 +0800 |
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V2: Following the advice from Cong Wang, I submit a patch as normal.
Hi,all
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 0 root@qemu1:~# cat /proc/sys/net/ipv4/conf/all/forwarding 1
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 appeared.
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.
Based on this patch [ipv6: fix bad free of addrconf_init_net], I made a new patch to fix this problem on ipv4.
Any reply is appreciated.
Zhu Yanjun (1): ipv4: net namespace does not inherit network configurations
net/ipv4/devinet.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-)
-- 1.9.1
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