MAAS maas-import-pxe-файлы

Я испытываю эту проблему на новой установке maas за прокси.

sudo http_proxy=http://myname:mypass@192.45.0.2:3128 maas-import-pxe-files

2015-05-21 13:28:41,236 INFO Importing boot resources.
2015-05-21 13:28:41,255 ERROR Unhandled exception; unable to continue.
Traceback (most recent call last):
  File "/usr/sbin/maas-import-pxe-files", line 30, in <module>
    main(args)
  File "/usr/lib/python2.7/dist-packages/provisioningserver/import_images/boot_resources.py", line 493, in main
    repo_boot = dumper.dump(source['path'], keyring=source['keyring'])
  File "/usr/lib/python2.7/dist-packages/provisioningserver/import_images/boot_resources.py", line 276, in dump
    super(RepoDumper, self).sync(reader, rpath)
  File "/usr/lib/python2.7/dist-packages/simplestreams/mirrors/__init__.py", line 82, in sync
    content, payload = reader.read_json(path)
  File "/usr/lib/python2.7/dist-packages/simplestreams/mirrors/__init__.py", line 40, in read_json
    return raw, self.policy(content=raw, path=path)
  File "/usr/lib/python2.7/dist-packages/simplestreams/util.py", line 254, in policy_read_signed
    return read_signed(content=content, keyring=keyring)
  File "/usr/lib/python2.7/dist-packages/simplestreams/util.py", line 299, in read_signed
    raise SignatureMissingException("No signature found!")
SignatureMissingException: No signature found!

Я также пробовал это:

maas useromc maas set-config name=http_proxy value=http://myname:mypass@192.45.0.2:3128
{"http_proxy": ["Enter a valid URL."]}

Нет способа загрузить эти файлы pxe ... Любой совет приветствуется!