DNS results

### DNS on my local machine
$ nslookup google.de
Server:         127.0.0.53
Address:        127.0.0.53#53

Non-authoritative answer:
Name:   google.de
Address: 142.250.179.163
Name:   google.de
Address: 2a00:1450:400e:802::2003

### DNS on docker ###
$ sudo docker run -it tutum/dnsutils nslookup google.de
;; connection timed out; no servers could be reached

### Ping from within docker ###
$ sudo docker run -it tutum/dnsutils ping 1.1.1.1
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
From 172.17.0.2 icmp_seq=1 Destination Host Unreachable
From 172.17.0.2 icmp_seq=2 Destination Host Unreachable
From 172.17.0.2 icmp_seq=3 Destination Host Unreachable
From 172.17.0.2 icmp_seq=5 Destination Host Unreachable
From 172.17.0.2 icmp_seq=6 Destination Host Unreachable
From 172.17.0.2 icmp_seq=7 Destination Host Unreachable
From 172.17.0.2 icmp_seq=8 Destination Host Unreachable
From 172.17.0.2 icmp_seq=9 Destination Host Unreachable
^C
--- 1.1.1.1 ping statistics ---
11 packets transmitted, 0 received, +8 errors, 100% packet loss, time 10232ms
pipe 4


### I then tried restarting the docker demon - and it started working again ###
$ sudo systemctl restart docker

$ sudo docker run -it tutum/dnsutils nslookup google.de
Server:         85.214.7.22
Address:        85.214.7.22#53

Non-authoritative answer:
Name:   google.de
Address: 142.250.179.163

### But, the very next docker run failed again
$ sudo docker run -it tutum/dnsutils nslookup google.de
;; connection timed out; no servers could be reached