cleanup.py

import subprocess
import re

p = subprocess.Popen(['ipmaddr'], stdout=subprocess.PIPE,
                     stderr=subprocess.PIPE)
out, err = p.communicate()

prefix_to_delete = ['qv', 'qb', 'ta']

regexp = re.compile(r'^[0-9]')

for line in out.splitlines():
    if regexp.search(line) is not None:
        interface = line.split(':')[1].strip()
        if interface[:2] in prefix_to_delete:
            print 'removing: ', interface
            subprocess.call(["ip", "link", "set", interface ,"down"])