I set up an Ubuntu 18.04 test server today as an LXD host machine and ran into this issue.
network:
version: 2
renderer: networkd
ethernets:
ens33:
dhcp4: no
dhcp6: no
bridges:
br0:
interfaces: [ens33]
dhcp4: no
dhcp6: no
addresses: [192.168.1.101/24]
gateway4: 192.168.1.1
nameservers:
addresses: [192.168.1.1, 8.8.8.8, 8.8.4.4]
root@bionic:/home/bionic# systemd-resolve --status
Global
DNS Servers: 192.168.1.1
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 6 (tun0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 5 (veth0OI7SQ)
Current Scopes: LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 3 (br0)
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 192.168.1.1 8.8.8.8 8.8.4.4
Link 2 (ens33)
Current Scopes: none
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
root@bionic:/home/bionic# ping google.com
ping: google.com: Temporary failure in name resolution
Also the error message is misleading, there's nothing "temporary" about this failure. It's permanent.
I can reach IP addresses directly but all DNS lookups are failing, preventing me from doing upgrades and normal operations.
I set up an Ubuntu 18.04 test server today as an LXD host machine and ran into this issue.
network:
version: 2
renderer: networkd
ethernets:
ens33:
dhcp4: no
dhcp6: no
bridges:
br0:
interfaces: [ens33]
dhcp4: no
dhcp6: no
addresses: [192.168.1.101/24]
gateway4: 192.168.1.1
nameservers:
addresses: [192.168.1.1, 8.8.8.8, 8.8.4.4]
root@bionic: /home/bionic# systemd-resolve --status
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
Global
DNS Servers: 192.168.1.1
DNSSEC NTA: 10.in-addr.arpa
Link 6 (tun0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 5 (veth0OI7SQ)
Current Scopes: LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
Link 3 (br0)
8.8.8. 8
8.8.4. 4
Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 192.168.1.1
Link 2 (ens33)
Current Scopes: none
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
root@bionic: /home/bionic# ping google.com
ping: google.com: Temporary failure in name resolution
Also the error message is misleading, there's nothing "temporary" about this failure. It's permanent.
I can reach IP addresses directly but all DNS lookups are failing, preventing me from doing upgrades and normal operations.