DNS resolution no longer works; dnsmasq uses 100% CPU
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
dnsmasq (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Upgraded from Trusty latest to Utopic latest, and rebooted.
DNS resolution no longer worked. I.e. ping google.com failed, ping 8.8.8.8 suceeded.
dnsmasq is running, and port 53 is open. Turned on log queries and log dhcp then attempted to ping google. Extract from syslog is attached.
I have now worked around this by adding "nameserver 8.8.8.8" to /etc/resolv.conf. I am aware this is not a sustainable workaround as this file is automatically generated.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: dnsmasq 2.70-1 [modified: etc/dnsmasq.conf]
ProcVersionSign
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
Date: Wed Apr 30 16:52:25 2014
InstallationDate: Installed on 2011-12-04 (878 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
PackageArchitec
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/zsh
SourcePackage: dnsmasq
SystemImageInfo: Error: [Errno 2] No such file or directory: 'system-image-cli'
UpgradeStatus: Upgraded to utopic on 2014-01-31 (88 days ago)
mtime.conffile.
summary: |
- Upon upgrade, DNS resolution no longer works + Upon upgrade, DNS resolution no longer works; dnsmasq uses 100% CPU |
Also note that dnsmasq is running under user=nobody and running at 99-100% CPU.