NetworkManager fails to make DHCP-supplied nameserver addresses available
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
network-manager (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
On occasion, network manager doesn't find/assign a DNS server. This is with an up-to-date Precise install, and on this occasion when ISO testing.
I doubt that it has to do with hardware, because it's happened on two completely different machines (Asus EeePC 900 with Atheros L2 chip and a desktop machine with r8169).
When this happens, the computer is assigned an IP number, an internet connection exists and I can ping various websites plus my router by using the IP number. Website names of course don't get resolved.
The problem is solved (in the short term) by entering "sudo dhclient" in a terminal.
~$ sudo dhclient
RTNETLINK answers: File exists
Before issuing this command, /etc/resolv.conf reads:
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search lan
After issuing the command, /etc/resolv.conf reads:
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 192.168.1.254
nameserver 127.0.0.1
search lan
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.3.995+
ProcVersionSign
Uname: Linux 3.2.0-20-
ApportVersion: 1.95-0ubuntu1
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Mar 25 01:51:16 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120324.1)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
NetworkManager.
[main]
NetworkingEnab
WirelessEnable
WWANEnabled=true
WimaxEnabled=true
ProcEnviron:
LANGUAGE=en_NZ:en
TERM=xterm
PATH=(custom, no user)
LANG=en_NZ.UTF-8
SHELL=/bin/bash
RfKill:
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
summary: |
- Network manager not always finding DNS servers + NetworkManager fails to make DHCP-supplied nameserver addresses + available |
This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here: iso.qa. ubuntu. com/qatracker/ reports/ bugs/964288
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