Установщик Openstack Autopilot не работает при начальной загрузке

У меня уже развернут узел MAAS с использованием опции juju bootstrap - upgrade tools, и когда я запускаю sudo openstack-install и выбираю опцию Autopilot. Похоже, что время истекло для entropy.ubuntu.com. Мой прокси и DNS настроены, и я могу wget и nslookup с сервера MAAS, как показано ниже:

aavam@maas:~$ wget https://streams.canonical.com
--2016-05-03 10:22:26--  https://streams.canonical.com/
Connecting to 64.102.255.47:80... connected.
Proxy request sent, awaiting response... 200 OK
Length: 948 [text/html]
Saving to: ‘index.html.3’  

100%[================================================================================================================================================>] 948         --.-K/s   in 0s  
2016-05-03 10:22:27 (33.7 MB/s) - ‘index.html.3’ saved [948/948]  

aavam@maas:~$ wget https://entropy.ubuntu.com
--2016-05-03 10:22:41--  https://entropy.ubuntu.com/
Connecting to 64.102.255.47:80... connected.
Proxy request sent, awaiting response... 400 Bad Request
2016-05-03 10:22:42 ERROR 400: Bad Request.

aavam@maas:~$ wget https://91.189.94.24
--2016-05-03 10:23:26--  https://91.189.94.24/
Connecting to 64.102.255.47:80... connected.
    ERROR: certificate common name ‘entropy.ubuntu.com’ doesn't match requested host name ‘91.189.94.24’.
To connect to 91.189.94.24 insecurely, use `--no-check-certificate'.

aavam@maas:~$ wget --no-check-certificate https://91.189.94.24
--2016-05-03 10:23:47--  https://91.189.94.24/
Connecting to 64.102.255.47:80... connected.
    WARNING: certificate common name ‘entropy.ubuntu.com’ doesn't match requested host name ‘91.189.94.24’.
Proxy request sent, awaiting response... 400 Bad Request
2016-05-03 10:23:48 ERROR 400: Bad Request.

aavam@maas:~$ nslookup 91.189.94.24
Server:         172.55.122.165
Address:        172.55.122.165#53

Non-authoritative answer:
24.94.189.91.in-addr.arpa       name = okra.canonical.com.

Authoritative answers can be found from:
94.189.91.in-addr.arpa  nameserver = ns3.canonical.com.
94.189.91.in-addr.arpa  nameserver = ns1.canonical.com.
94.189.91.in-addr.arpa  nameserver = ns2.canonical.com.
ns1.canonical.com       internet address = 91.189.94.173
ns2.canonical.com       internet address = 91.189.95.3
ns3.canonical.com       internet address = 91.189.91.139