I can confirm that the 4.4.0-128-generic kernel does *not* have the
problem, while the 4.4.0-130-generic kernel *does*.

Op wo 4 jul. 2018 om 17:21 schreef Daniel Manrique <
daniel.manri...@canonical.com>:

> Hello,
>
> Thank you for taking the time to report this bug and helping to make
> Ubuntu better.
>
>
> As diagnostic procedures, I can suggest:
>
> You could try rebooting, hitting the key to get the grub menu (Shift,
> see https://askubuntu.com/questions/16042/how-to-get-to-the-grub-menu-
> at-boot-time
> <https://askubuntu.com/questions/16042/how-to-get-to-the-grub-menu-at-boot-time>)
> and choosing the previous kernel, to see if that fixes the
> issue you're seeing. If so, it might well be related to the kernel
> upgrade.
>
> Then, /var/log/apt/history.log will tell you exactly what (and when) was
> upgraded.
>
> That said, The problem as you reported is not related to the Canonical
> SSO provider or service. I'll move it to the "Linux" package, since per
> your description it seems to correlate with a kernel upgrade. Note that
> you will be required to provide more debugging information as per the
> kernel debugging procedures.
>
> https://wiki.ubuntu.com/Kernel/Debugging/Symptom
>
>
> ** Project changed: canonical-identity-provider => linux (Ubuntu)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1780103
>
> Title:
>   Network namespaces support for non-IP suddenly missing
>
> Status in linux package in Ubuntu:
>   New
>
> Bug description:
>   I run 16.04, and I keep daily track of all dist-upgrades. Yesterday (3
>   july 2018) there was an upgrade, and it must have been a kernel
>   upgrade, because my machine had rebooted (which I make it do
>   automatically if needed).
>
>   From today, the system tests on my project have stopped working (C
>   development). These system tests do the following: using the 'ip'
>   command, they set up several network namespaces, in which I run
>   several executables concurrently, that exchange network messages with
>   each other. The namespaces that use IP have kept on working, while the
>   ones that don't (I'm implementing an ethernet network packet structure
>   of my own) have stopped working. I've done the same tests on my
>   laptop, which is also a 16.04, on which I haven't done the upgrade
>   (and I'm very hesitant to do so now, because this is my bread and
>   butter), and there they work still.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780103/+subscriptions
>

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1780103

Title:
  Network namespaces support for non-IP suddenly missing

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780103/+subscriptions

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