[Pkg-utopia-maintainers] Bug#973701: network-manager: systemctl restart ModemManager.service wipes /etc/resolve.conf (almost) clean

[Cristian Ionescu-Idbohrn]

On Sun, 22 Nov 2020, Matteo F. Vescovi wrote:
> On 2020-11-04 at 21:09 (+01), Cristian Ionescu-Idbohrn wrote:
> 
> [...]
> 
> > IMO, my remarks and comments are all _but_ snide and stupid. The
> > problem here, as I see it, is this maintainer's _arrogant_ attitude.
> 
> Michael, sorry to say, but Cristian is right:
> 
> I see no snide and stupid comments to the bug report and I'm 
> actually affected by this weird behaviour since a week or so, I must 
> admit.

Yes, I'm not alone.  I noticed this odd behaviour months ago but did 
not report it, as I expected that kind of _arrogant_ reaction.

> I'm still digging in to find the culprit (possibly, a particular 
> version of NM or MM that introduced the issue)

For me, it does not appear ModemManager has anything to do with this, 
but I can't rule that out.

> but I need some more tests with alternative setups to fully 
> understand the situation (seems like systems with both Wi-Fi and 
> WWAN are affected).

I can reproduce this in another way too.  My laptop has both a wifi 
and a wired chip.  When I stick in the cable, the same problem occurs: 
I loose the DNS configuration in /etc/resolv.conf.  I can add that 
manually, but that should _not_ be expected.

Another peculiar behaviour is that if I poweroff connected to the wifi 
and startup wired connected, I end up having to disconnect the cable 
and connect it back again to be able to get things (sort of) working 
again.  In both cases (wired/wireless) I rely on the router's DHCP to 
provide the proper DNS configuration.  That may need another bug 
report, if anyone else is able to reproduce.


Cheers,

-- 
Cristian