Public bug reported:
I noticed when a USB wifi dongle is plugged in and I disconnect the
builtin one (Ubuntu 16.10), that resolving of DNS didn't work anymore.
I could ping for example google.nl on IP, but not resolve the name.
After some searching I found the issue seems to be caused by dnsmasq or
systemd-resolved, the first being the most likely.
I disabled dnsmasq in NetworkManager and restarted it and stopped
dnsmasq and everything works as expected.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: dnsmasq 2.76-4
ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
Uname: Linux 4.8.6-byt-freeze-fix x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Dec 18 19:16:30 2016
InstallationDate: Installed on 2016-12-11 (7 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
PackageArchitecture: all
SourcePackage: dnsmasq
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: dnsmasq (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
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https://bugs.launchpad.net/bugs/1650929
Title:
DNS resolving fails after adding usb wifi dongle
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