no dns resolver when OpenVPN is running

[robert]

thanks

after playing around and checking what you suggest
the dns resolution works up a sudden ..

thanks for your good infuence :)
hop it keeps
robert

On 21.10.2017 18:39, Paul Smith wrote:
> Please be sure to provide information on what version of Ubuntu you're
> using.  Here I'll assume a recent version:
yes 16.04
>
> On Sat, 2017-10-21 at 18:26 +0200, robert rottermann wrote:
>> As long as the VPN is running, the dns resolver does not work any more, and I
>> can not connect to the internet.
> These are two different things: is it that DNS is not working (e.g., you
> can access systems on the internet but only by their IP address), or is
> it that you cannot connect to the internet at all (your network
> connection is not up)?
acces to an ip address works
it is only the resolver that seems not to work

>
> If it's DNS, then probably you don't have your resolver configured
> properly... maybe you undid the original network-manager resover
> configuration "back in the day"; normally it takes care of things.
>
> Look at your /etc/resolv.conf file.  Is it a file, or a symbolic link?
> If the latter, where is it pointing?
>
> If you want to use network-manager (and I agree, it's extremely handy to
> use it for VPN) then you want your /etc/resolv.conf to look like this:
>
>    $ ls -al /etc/resolv.conf
>      <...> /etc/resolv.conf -> ../run/NetworkManager/resolv.conf
>
> That is, it's a symbolic link to the /run/NetworkManager/resolv.conf
> file.  When my VPN is running, the contents of this file look like:
>
>    $ cat /etc/resolv.conf
>    # Generated by NetworkManager
>    search <vpn-domains>
>    nameserver 127.0.1.1
>
> And, there's a dnsmasq instance running on my system:
>
>    $ ps -aef | grep 'dnsmasq.*127\.0\.1\.1'
>    nobody    1269  1007  0 Oct18 ?        00:00:01 /usr/sbin/dnsmasq
>      --no-resolv --keep-in-foreground --no-hosts --bind-interfaces
>      --pid-file=/var/run/NetworkManager/dnsmasq.pid
>      --listen-address=127.0.1.1 --cache-size=0 --conf-file=/dev/null
>      --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq
>      --conf-dir=/etc/NetworkManager/dnsmasq.d
>