import os

from .env import Env
from .netns import IsolatedMacVlan
from .sniffer import Sniffer
from .tap import Test
from .util import until

def std_topology(name):
    return os.path.realpath(
        os.path.join(
            os.path.dirname(__file__),
            "topologies",
            name + ".dot"
        )
    )