Public bug reported:

1)
root@dimension:/home/bp1# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu Artful Aardvark (development branch)
Release:        17.10
Codename:       artful
root@dimension:/home/bp1# 
2)
systemd:
  Installed: 234-2ubuntu10
  Candidate: 234-2ubuntu10
  Version table:
 *** 234-2ubuntu10 500
        500 http://gb.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        100 /var/lib/dpkg/status
3) DNS resolution
4) No DNS resolution from my configured DNS (in my case 192.168.1.1)
Workarounds: 
Enable FallbackDNS=8.8.8.8 8.8.4.4 in resolved.conf
Or running dhclient

Fresh boot of Artful (static IP via network manager and DNS should be at
192.168.1.1):

bp1@dimension:~$ ifconfig 
enp8s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.5  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::99f:fae5:1467:a576  prefixlen 64  scopeid 0x20<link>
        ether 00:1e:4f:e9:f1:c1  txqueuelen 1000  (Ethernet)
        RX packets 141  bytes 14707 (14.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 234  bytes 29807 (29.8 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 556  bytes 33758 (33.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 556  bytes 33758 (33.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

bp1@dimension:~$ ping www.dn.se
ping: www.dn.se: Name or service not known
bp1@dimension:~$ su
Password: 
root@dimension:/home/bp1# systemd-resolve --status
Global
          DNSSEC NTA: 10.in-addr.arpa
                      16.172.in-addr.arpa
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa
                      18.172.in-addr.arpa
                      19.172.in-addr.arpa
                      20.172.in-addr.arpa
                      21.172.in-addr.arpa
                      22.172.in-addr.arpa
                      23.172.in-addr.arpa
                      24.172.in-addr.arpa
                      25.172.in-addr.arpa
                      26.172.in-addr.arpa
                      27.172.in-addr.arpa
                      28.172.in-addr.arpa
                      29.172.in-addr.arpa
                      30.172.in-addr.arpa
                      31.172.in-addr.arpa
                      corp
                      d.f.ip6.arpa
                      home
                      internal
                      intranet
                      lan
                      local
                      private
                      test

Link 2 (enp8s0)
      Current Scopes: LLMNR/IPv4 LLMNR/IPv6
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no
root@dimension:/home/bp1# ping www.dn.se
ping: www.dn.se: Name or service not known
root@dimension:/home/bp1# nano /etc/systemd/resolved.conf 
root@dimension:/home/bp1# cat /etc/systemd/resolved.conf
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See resolved.conf(5) for details

[Resolve]
#DNS=
FallbackDNS=8.8.8.8 8.8.4.4
#Domains=
#LLMNR=yes
#MulticastDNS=yes
#DNSSEC=no
#Cache=yes
#DNSStubListener=udp
root@dimension:/home/bp1# ps ax | grep systemd
  254 ?        Ss     0:00 /lib/systemd/systemd-journald
  292 ?        Ss     0:00 /lib/systemd/systemd-udevd
  573 ?        Ssl    0:00 /lib/systemd/systemd-timesyncd
  585 ?        Ss     0:00 /lib/systemd/systemd-networkd
  701 ?        Ss     0:00 /lib/systemd/systemd-logind
  735 ?        Ss     0:00 /usr/bin/dbus-daemon --system --address=systemd: 
--nofork --nopidfile --systemd-activation
  844 ?        Ss     0:00 /lib/systemd/systemd-resolved
 1138 ?        Ss     0:00 /lib/systemd/systemd --user
 1219 ?        Ss     0:00 /usr/bin/dbus-daemon --session --address=systemd: 
--nofork --nopidfile --systemd-activation
 1531 ?        Ss     0:00 /lib/systemd/systemd --user
 1678 pts/0    S+     0:00 grep --color=auto systemd
root@dimension:/home/bp1# kill -HUP 844
root@dimension:/home/bp1# ping www.dn.se
PING e12723.a.akamaiedge.net (23.217.10.201) 56(84) bytes of data.
64 bytes from a23-217-10-201.deploy.static.akamaitechnologies.com 
(23.217.10.201): icmp_seq=1 ttl=58 time=27.4 ms
^C
--- e12723.a.akamaiedge.net ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 27.478/27.478/27.478/0.000 ms

root@dimension:/home/bp1# systemd-resolve --status
Global
         DNS Servers: 8.8.8.8
                      8.8.4.4
          DNSSEC NTA: 10.in-addr.arpa
                      16.172.in-addr.arpa
                      168.192.in-addr.arpa
                      17.172.in-addr.arpa
                      18.172.in-addr.arpa
                      19.172.in-addr.arpa
                      20.172.in-addr.arpa
                      21.172.in-addr.arpa
                      22.172.in-addr.arpa
                      23.172.in-addr.arpa
                      24.172.in-addr.arpa
                      25.172.in-addr.arpa
                      26.172.in-addr.arpa
                      27.172.in-addr.arpa
                      28.172.in-addr.arpa
                      29.172.in-addr.arpa
                      30.172.in-addr.arpa
                      31.172.in-addr.arpa
                      corp
                      d.f.ip6.arpa
                      home
                      internal
                      intranet
                      lan
                      local
                      private
                      test

Link 2 (enp8s0)
      Current Scopes: LLMNR/IPv4 LLMNR/IPv6
       LLMNR setting: yes
MulticastDNS setting: no
      DNSSEC setting: no
    DNSSEC supported: no

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1720976

Title:
  no DNS resolution via systemd

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