from sfa.rspecs.elements.pltag import PLTag
from sfa.rspecs.version_manager import VersionManager
-from sfa.util.plxrn import PlXrn, hostname_to_urn, hrn_to_pl_slicename
+from sfa.planetlab.plxrn import PlXrn, hostname_to_urn, hrn_to_pl_slicename
from sfa.planetlab.vlink import get_tc_rate
from sfa.planetlab.topology import Topology