resolv.conf reproducable empty when connected to ethernet and 3g and disconnect from 3g

[van Schelve <public van-schelve de>]

Hi.

We found a reproducable bug with NetworkManager. In the end you have a
connection but resolv.conf is empty and. 

How to reproduce:

* establish a mobile broadband connection (make sure everything else is
disconnected)
* Connect to ethernet in parallel
* disconnect from mobile broadband connection
* check /etc/resolv.conf. The file will not contain any dns server

Please tell me if you need further information.

NetworkManager (version 0.8.0.997)