Public bug reported:
Occasionally, after a resume from an update, network manager starts
behaving strangely, not setting the DomainServer for the network.
This happens when resuming the laptop to a location where:
- an additional ethernet card (which is the one to use) is attached via USB
- configuring that ethernet card NM is set up to clone a given mac address and
get addresses only from dhcp, while the dns server is set manually in the
network manager configuration
- there are also free wifi signals to which NM tends to connect
In this setup, NM fails to set the dns name in dnsmasq
The issue gets worked around by either
1) Using qdbus to call the dnsmasq dbus method to set the domain server.
In this case the solution is temporary. Namely when NM is asked to
disconnect from the net and then to reconnect, the issue comes again; or
2) Killing dnsmasq. In this case, dnsmasq ia automatically restarted and
everything starts working fine; or
3) Restarting NM itself.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: network-manager 1.2.6-0ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-42.45-generic 4.8.17
Uname: Linux 4.8.0-42-generic x86_64
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Mar 24 16:22:43 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-12-12 (1197 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
IpRoute:
default via 10.143.1.254 dev enx0050b61af5c1 proto static metric 100
10.143.0.0/19 dev enx0050b61af5c1 proto kernel scope link src 10.143.20.139
metric 100
SourcePackage: network-manager
UpgradeStatus: Upgraded to yakkety on 2017-01-10 (73 days ago)
nmcli-nm:
RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI
WWAN-HW WWAN
running 1.2.6 connected started full enabled enabled
enabled enabled disabled
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug third-party-packages yakkety
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https://bugs.launchpad.net/bugs/1675820
Title:
Network manager fails to set domain server in some circumstances
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