[Bug 1816530] Re: DNS servers are not being set in the system correctly when you upgrade from 16.04 to 18.04
Moshe Caspi
mcaspi12 at gmail.com
Thu Oct 10 07:59:02 UTC 2019
True, the upgrade completed successfully but without DNS which is
reasonable because I don't think that a user needs a network connection
after the files were downloaded. But I experience Wi-Fi disconnects once
in a while.
Anyway, I tried to figure out what might be the reason for the absent of
DNS. During the upgrade I choosed to keep my files when asked to keep or
change to the distro one's. I tried to remember which files I kept and
checked for network related files and I found that my
NetworkManager.conf was different from the distro file which was copied
to /etc/NetworkManager during the upgrade.
My old file:
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
no-auto-default=aa:bb:cc:dd:ee:ff,
[ifupdown]
managed=false
The distro file:
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
So, I decided to use the distro file instead my old file and now the DNS
works.
What I see now in syslog which might be related and I don't see when I
used 8.8.8.8 as a workaround is this:
Oct 10 09:47:58 systemd-resolved[335]: Using degraded feature set (UDP) for DNS server a.b.c.d.
Oct 10 09:57:05 systemd-resolved[335]: Grace period over, resuming full feature set (UDP+EDNS0) for DNS server a.b.c.d.
Oct 10 10:06:35 systemd-resolved[335]:Using degraded feature set (UDP) for DNS server a.b.c.d.
On Tue, 08 Oct 2019 20:06:40 -0000
Dan Streetman <dan.streetman at canonical.com> wrote:
> > During the upgrade which was done using Wi-Fi, the connection went
> down but it was after the download completed so the upgrade ended.
>
> sorry, it's not clear to me, are you saying the upgrade completed
> successfully?
>
> And do you mean that currently, your dns does not work?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1816530
>
> Title:
> DNS servers are not being set in the system correctly when you upgrade
> from 16.04 to 18.04
>
> Status in resolvconf package in Ubuntu:
> Invalid
>
> Bug description:
> I upgraded my 16.04 to 18.04 before the official release. After the
> upgrade I noticed that I don't have internet access. The wired network
> and the wifi settings looked good, but the internet didn't work. After
> the login the system always switched itself into airplane mode. I
> tethered the network via USB and Bluetooth by my mobile but they also
> didn't work.
>
> I found a useful answer from @andrew-woodhead666:
> https://answers.launchpad.net/ubuntu/+question/665374
>
> it seems this bug is still not fixed for the upgraded dists in the main release and affects a few dozens of ubuntu users.
> https://askubuntu.com/questions/1021884/no-internet-after-upgrade-from-16-04-to-18-04
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/resolvconf/+bug/1816530/+subscriptions
--
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to resolvconf in Ubuntu.
https://bugs.launchpad.net/bugs/1816530
Title:
DNS servers are not being set in the system correctly when you upgrade
from 16.04 to 18.04
Status in resolvconf package in Ubuntu:
Invalid
Bug description:
I upgraded my 16.04 to 18.04 before the official release. After the
upgrade I noticed that I don't have internet access. The wired network
and the wifi settings looked good, but the internet didn't work. After
the login the system always switched itself into airplane mode. I
tethered the network via USB and Bluetooth by my mobile but they also
didn't work.
I found a useful answer from @andrew-woodhead666:
https://answers.launchpad.net/ubuntu/+question/665374
it seems this bug is still not fixed for the upgraded dists in the main release and affects a few dozens of ubuntu users.
https://askubuntu.com/questions/1021884/no-internet-after-upgrade-from-16-04-to-18-04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/resolvconf/+bug/1816530/+subscriptions
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