# port is appended onto the domain, before the path. Should look like:
# http://domain:port/path
hrn, address, port = record['hrn'], record['addr'], record['port']
+ # sometime this is called at a very early stage with no config loaded
+ # avoid to remember this instance in such a case
+ if not address or not port:
+ continue
interface = Interface(hrn, address, port)
self[hrn] = interface