Problem with DNS resolution after suspend
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
network-manager (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
I upgraded my laptop to 16.10 yesterday. Sometimes after suspend I have network issues, one time I was not able to connect to a wifi network (might report another bug if this occurees again, but maybe it is related, as in network-manager is in some broken state after suspend).
Here is whats happening pretty often: After resume from suspend I have a solid network connection, no problem to ping machines in LAN or on the internet. But DNS resolution is broken until I restart the network-manager service.
I ran ubuntu-bug while DNS was broken, so if anything gets log-ed it should be in there.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: network-manager 1.2.4-0ubuntu1
ProcVersionSign
Uname: Linux 4.8.0-22-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Oct 16 21:01:09 2016
IfupdownConfig:
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
InstallationDate: Installed on 2016-09-28 (18 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IpRoute:
default via 192.168.0.1 dev wlp58s0 proto static metric 600
169.254.0.0/16 dev br-541a0f9bec93 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.18.0.0/16 dev br-541a0f9bec93 proto kernel scope link src 172.18.0.1
192.168.0.0/24 dev wlp58s0 proto kernel scope link src 192.168.0.118 metric 600
NetworkManager.
[main]
NetworkingEnab
WirelessEnable
WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to yakkety on 2016-10-15 (1 days ago)
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
running 1.2.4 connected started full enabled enabled enabled enabled enabled
▶ sudo killall dnsmasq
Works as well, afterwards things work again.