Installing libnl 3.2.27-1 on LM/Ubuntu-Xenial disables net interfaces

[Jef Oliver]

There was an ABI break, I believe around 3.2.22->3.2.23. If you go from
3.2.21 to the newest, this could be the problem. Don't hold me to this
though.

On Fri, Sep 23, 2016 at 3:23 PM, Mel Brands <bighype at gmail.com> wrote:
> Hi all,
>
> Ever since I upgraded to new Linux 4.4..0-x series of kernels, I've
> had unexplained network troubles. About 1 in 5 reboots would result in
> network interfaces being down and I was getting "The system network
> services are not compatible with this version." from NetworkManager. I
> used to "resolve" that error by rebooting... since none of the network
> troubleshooting methods worked for me.
>
> After I upgraded to 4.4.0-38-generic kernel, not even a reboot would
> bring network interfaces up. I finally did some searching and it turns
> out that libnl is the culprit.
>
> You can see other reports here for example:
> https://askubuntu.com/questions/727988/the-system-network-services-are-not-compatible-with-this-version-ubuntu-14-0
>
> The solution offered above is to downgrade libnl to 3.2.21-1. I can
> confirm that this works and my network interfaces work after reboots.
> Judging by the dates of the posts above, it seems that this issue has
> persisted for years.
>
> Since I don't like running old network packages, I'm hoping that
> someone here can tell me what's wrong and how I can fix this. I'm
> willing to help with tracking down the issue.
>
> Thank you!
> Mel
>
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