OK - complete solution/workaround is to be found here... But you must read
the whole lot before doing anything at all because the last edit makes the
first part redundant...
http://www.hecticgeek.com/2017/04/ubuntu-17-04-systemd-dns-issues/
The issue involves systemd within which the developers have turned on some
dns security aspect which had been turned off in earlier versions of
Ubuntu. But the author finds a way for users to keep it turned on but to
solve the problem at the same time via something called 'unbound'.
Anyway - read and try. Worked for me.
Best
David

On 23 April 2017 at 22:57, hrvooje <email address hidden> wrote:

> For me:
> work-wire OK
> work-wifi OK
> home-wifi FAIL
> I don't use a wire at home so I didn't try
>
> Then I do sudo service network-manager restart and I can surf again. In
> that time while I can't sufr the internet I get ping 8.8.8.8 and other
> IP's. Torrent dowloading is also working in that time. So, this is
> obviously a dns and network-manager issue.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1654918
>
> Title:
>   No Internet access with default of  Automatic (DHCP)
>
> Status in Linux:
>   New
> Status in NetworkManager:
>   New
> Status in network-manager package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Fresh 17.04 install, wireless router connects without any issue but
> there is no internet connection/access.
>   This continues thru disconnecting, reconnecting, rebooting ect, Nothing..
>
>   If I edit the connection > IPv4 Settings to Automatic (DCHP) addresses
> only & manually add Google DNS nameservers: then internet is enabled.
> screen attached
>   Note this also affects ethernet, not just wireless
>   Hardware is:
>   description: Wireless interface
>          product: Wireless 7260
>          vendor: Intel Corporation
>          physical id: 0
>          bus info: pci@0000:08:00.0
>          logical name: wlp8s0
>          version: 73
>          serial: xxxxxxxx
>          width: 64 bits
>          clock: 33MHz
>          capabilities: pm msi pciexpress bus_master cap_list ethernet
> physical wireless
>          configuration: broadcast=yes driver=iwlwifi
> driverversion=4.9.0-11-generic firmware=17.352738.0 ip=192.168.1.4
> latency=0 link=ye s multicast=yes wireless=IEEE 802.11
>          resources: irq:32 memory:c2400000-c2401fff
>
>   To note: this hardware works perfectly in 14.04 > 16.04
>   Add. note; issue doesn't arise with 4.11.x kernel
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 17.04
>   Package: network-manager 1.4.2-2ubuntu4
>   ProcVersionSignature: Ubuntu 4.9.0-11.12-generic 4.9.0
>   Uname: Linux 4.9.0-11-generic x86_64
>   ApportVersion: 2.20.4-0ubuntu1
>   Architecture: amd64
>   CurrentDesktop: Unity
>   Date: Sun Jan  8 22:08:26 2017
>   IfupdownConfig:
>    # interfaces(5) file used by ifup(8) and ifdown(8)
>    auto lo
>    iface lo inet loopback
>   InstallationDate: Installed on 2017-01-09 (0 days ago)
>   InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Alpha amd64 (20170108)
>   IpRoute:
>    default via 192.168.1.1 dev wlp8s0  proto static  metric 600
>    169.254.0.0/16 dev wlp8s0  scope link  metric 1000
>    192.168.1.0/24 dev wlp8s0  proto kernel  scope link  src 192.168.1.4
> metric 600
>   NetworkManager.conf:
>    [main]
>    plugins=ifupdown,keyfile
>
>    [ifupdown]
>    managed=false
>   NetworkManager.state:
>    [main]
>    NetworkingEnabled=true
>    WirelessEnabled=true
>    WWANEnabled=true
>   SourcePackage: network-manager
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   nmcli-dev:
>    DEVICE  TYPE      STATE        DBUS-PATH
>   CONNECTION  CON-UUID                              CON-PATH
>    wlp8s0  wifi      connected    /org/freedesktop/NetworkManager/Devices/2
> 06F21A      fb815a75-4091-455e-b73d-2c1f2d97220f  /org/freedesktop/
> NetworkManager/ActiveConnection/0
>    enp7s0  ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/1
> --          --                                    --
>    lo      loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/0
> --          --                                    --
>   nmcli-nm:
>    RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING
> WIFI-HW  WIFI     WWAN-HW  WWAN
>    running  1.4.2    connected  started  full          enabled
>  enabled  enabled  enabled  enabled
>
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>