[Pkg-utopia-maintainers] Bug#978935: Bug#978935: network-manager: disconnect on upgrade

[Michael Biebl]

Control: severity -1 normal

Am 01.01.21 um 01:19 schrieb Vincent Lefevre:
> On 2020-12-31 20:22:56 +0100, Michael Biebl wrote:
>> Am 31.12.20 um 18:37 schrieb Vincent Lefevre:
>>> During the upgrade, network-manager disconnected, so that I completely
>>> lost the network connection. Fortunately, I was in front of my machine,
>>> but this means that a remote upgrade can make the machine unavailable!
>>
>> I might be mistaken, but afaics, this has always been the case for WiFi
>> connections (as it is not really possible to carry the state across daemon
>> reexecs). Are you saying this is not the case?
> 
> I've been using NetworkManager only since July on my laptop.
> I've checked my logs, and this was the first time I upgraded
> NetworkManager over WiFi.
> 
> Before using NetworkManager, I've never had such an problem, IIRC.
> When my machine was connected via WiFi, I was using wicd. I suppose
> that it could handle the reconnection, or this would mean that
> I upgraded it only over Ethernet (I don't remember).
> 
> The name of the active connection could be stored in a file, so that
> a reexec'ed daemon could pick the information. By active connection,
> I mean the last connection chosen by the user, under the condition
> that the user has not explicitly disconnected.

It's not that simple, unfortunately. There is much more state, 
especially in external daemons like wpasupplicant.

>> Ethernet connections should not be torn down on a daemon stop.

See also this NEWS entry from the 1.6 release:

> * NetworkManager would now keep most connections up on shutdown (except Wi-Fi
>     connections, VPN connections and other kinds that can't be assumed on
>     startup)


The alternative of not restarting NM on upgrades isn't great either.

Not sure if there is anything that can be done about this.

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