Public bug reported:
Binary package hint: network-manager
When changing network connection types from UMTS ("Mobile Broadband") to
Ethernet by first establishing the new connection and then dropping the
other connection, network-manager will overwrite /etc/resolv.conf with a
version that does not include any DNS servers.
== Steps to reproduce ==
0. Prerequisites: Laptop with UMTS and Ethernet connections, available UMTS
connection details, available Ethernet connection.
1. Disconnect all network interfaces.
2. Connect to the UMTS connection (in the network-manager indicator).
3. Look at /etc/resolv.conf
4. Connect to the Ethernet connection (e.g. physically plug in the Ethernet
cable).
5. Look at /etc/resolv.conf
6. Disconnect the UMTS connection (in the network-manager indicator).
7. Look at /etc/resolv.conf
== Actual results ==
Step 3 shows the DNS servers of the UMTS network. Step 5 shows both the DNS
servers of the Ethernet (listed first) and UMTS connections. Step 7 shows no
DNS servers:
--snip
# Generated by NetworkManager
search ploetzli.ch
--snap
Since no DNS servers are entered in /etc/resolv.conf, name resolution is
non-functional and can only be restored by disconnecting and
reconnecting the Ethernet connection.
== Expected results ==
Step 7 should show the DNS server of the Ethernet connection.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: network-manager 0.8.4~git.20110319t175609.d14809b-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Wed May 18 18:24:05 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
IpRoute:
192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.160 metric 1
172.16.128.0/24 dev vmnet8 proto kernel scope link src 172.16.128.1
192.168.65.0/24 dev vmnet1 proto kernel scope link src 192.168.65.1
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
default via 192.168.5.1 dev eth0 proto static
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=false
ProcEnviron:
LANGUAGE=en_GB:en
LANG=de_DE.utf8
LC_MESSAGES=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: Upgraded to natty on 2011-05-05 (13 days ago)
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty running-unity
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https://bugs.launchpad.net/bugs/784715
Title:
network-manager loses DNS configuration in resolv.conf when switching
connection types
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