Comment 1 for bug 1765405

I hit this on arm64 hardware, queens+bionic,

2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed Traceback (most recent call last):
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 1164, in <module>
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed main()
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 1157, in main
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed hooks.execute(sys.argv)
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/charmhelpers/core/hookenv.py", line 801, in execute
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed self._hooks[hook_name]()
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/cloud-compute-relation-changed", line 666, in compute_changed
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed ssh_compute_add(key, rid=rid, unit=unit)
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/nova_cc_utils.py", line 1005, in ssh_compute_add
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed if ns_query(short):
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/var/lib/juju/agents/unit-nova-cloud-controller-0/charm/hooks/charmhelpers/contrib/network/ip.py", line 478, in ns_query
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed answers = dns.resolver.query(address, rtype)
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/usr/lib/python2.7/dist-packages/dns/resolver.py", line 1132, in query
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed raise_on_no_answer, source_port)
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed File "/usr/lib/python2.7/dist-packages/dns/resolver.py", line 947, in query
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed raise NoNameservers(request=request, errors=errors)
2018-05-09 14:08:41 DEBUG cloud-compute-relation-changed dns.resolver.NoNameservers: All nameservers failed to answer the query node-moingo. IN A: Server 127.0.0.53 UDP port 53 answered SERVFAIL