Re: Bug in netlink monitor

[George Shuklin <george.shuklin@gmail.com>]

On 26/10/2022 11:34, Nicolas Dichtel wrote:
> Le 25/10/2022 à 13:18, George Shuklin a écrit :
>> I found that if veth interface is created in a namespace using netns option for
>> ip, no events are logged in `ip monitor all-nsid`.
>>
>> Steps to reproduce:
>>
>>
>> (console1)
>>
>> ip monitor all-nsid
>>
>>
>> (console 2)
>>
>> ip net add foobar
>>
>> ip link add netns foobar type veth
>>
>>
>> Expected results:
>>
>> Output in `ip monitor`. Actual result: no output, (but there are two new veth
>> interaces in foobar namespace).
>>
>> Additional observation: namespace 'foobar' does not have id in output of `ip net`:
> This is why.
> https://man7.org/linux/man-pages/man8/ip-monitor.8.html
>
> "       If the all-nsid option is set, the program listens to all network
>         namespaces that have a nsid assigned into the network namespace
>         were the program is running"
>
> You can assign one with:
> ip netns set foobar auto
>
Oh, I missed that.

But I think it's making things a bit odd, because there are network 
events in the system which are not visible in `ip monitor` (no matter 
what options are set).

Are there a way to see _all_ network events?