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

[Matteo F. Vescovi]

Control: severity -1 important
Control: tag -1 -confirmed

Hi Michael!

On 2020-11-22 at 21:04 (+01), Matteo F. Vescovi wrote:

[...]

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

FTR, I mainly use a 4G WWAN connection with an integrated module in my
ThinkPad. Sometimes, I also use home/office Wi-Fi.

I just found few minutes to do some more testing and I discovered that
the weird behavior happens only when an OpenVPN connection is in place,
using any of the connections available (in my case, I was used to set
automatic VPN authentication on WWAN connection).

If I disable the OpenVPN connection before disconnecting WiFi or WWAN
connections, everything works just fine; but if I leave it on (as it
should be, letting the system to manage the situation), the resolv.conf
file got completely wiped, as Cristian reported.

So, probably, the culprit here is the network-manager-openvpn{-gnome}
package, more than NM itself. Should the bug report be re-assigned to
it, then? Let me know, please.

Hope this helps, somehow.

Cheers.


-- 
Matteo F. Vescovi || Debian Developer
GnuPG KeyID: 4096R/0x8062398983B2CF7A
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