Pid namespaces problems

[Pavel Emelyanov]

Daniel Lezcano wrote:
> Denis V. Lunev wrote:
>> Daniel Lezcano wrote:
>>
>>>  * the first one is the locking of the network namespace list by
>>> rtnl_lock, so from the timer callback we can not browse the network
>>> namespace list to check the age of the routes. It is a problem I would
>>> like to talk with Denis if he has time
>> From my point of view, the situation is clear. The timer should be
>> per/namespace. The situation is completely different as one in IPv4.
> 
> We thought to make a timer per namespace for ipv6, but we are a little 
> afraid for the performances when there will be a lot of containers.
> Anyway, we can do a timer per namespace and optimize that later. I will 
> cook a new patch to take into account that for the next week.

I propose to start a new mailing thread for net namespaces discussions
or at least change this one's subject ;)

>>>  * the loopback refcounting is not correctly handled in ipv6. This
>>> protocol do not expect to have the loopback to be unregistered, so there
>>> is some problem with the addr_ifdown function when exiting the network
>>> namespace
>> I think that default routing targets and similar staff should be
>> dynamically allocated as a start and submitted now. No need to wait
>> NETNS infrastructure. I have sent similar cleanup for fib rules
>> recently. No answer from David yet.
> 
> Interesting.
>