Ubuntu
network-manager package

  1. Bug #1713457
  2. Comment #0

Comment 0 for bug 1713457

Revision history for this message
Anders Kaseorg (andersk) wrote :

When I connect to a wireless network that sets a DNS search domain name via DHCP, the line 'search domain' is added to /etc/resolv.conf as expected. But if I then disconnect and connect to a different network, it is not removed from resolv.conf. If the second network also sets a search domain name, that one gets appended to resolv.conf along with the first one, and so on. Depending on the network, this can cause name resolution failures or other misbehavior.

To be sure this wasn't some kind of user configuration issue, I reproduced this on the artful daily live image (artful-desktop-amd64.iso, 2017-08-27), from which I'm writing this report.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: network-manager 1.8.2-1ubuntu3
ProcVersionSignature: Ubuntu 4.12.0-11.12-generic 4.12.5
Uname: Linux 4.12.0-11-generic x86_64
ApportVersion: 2.20.6-0ubuntu7
Architecture: amd64
CasperVersion: 1.384
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 28 10:34:22 2017
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IpRoute:
 default via 172.20.20.1 dev wlp3s0 proto static metric 600
 169.254.0.0/16 dev wlp3s0 scope link metric 1000
 172.20.20.0/24 dev wlp3s0 proto kernel scope link src 172.20.20.20 metric 600
LiveMediaBuild: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170827)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH
 wlp3s0 wifi connected /org/freedesktop/NetworkManager/Devices/3 xfinitywifi 39ffbbfc-1c1e-41c9-b3eb-c513065c3ea6 /org/freedesktop/NetworkManager/ActiveConnection/2
 enp0s31f6 ethernet unavailable /org/freedesktop/NetworkManager/Devices/2 -- -- --
 lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- --
nmcli-nm:
 RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN
 running 1.8.2 connected started full enabled enabled enabled enabled enabled