def __init__(self,routes,origin,ttl):
self.origin = DNSLabel(origin)
self.ttl = parse_time(ttl)
self.routes = {}
for r in routes:
route,_,cmd = r.partition(":")
if route.endswith('.'):
route = DNSLabel(route)
else:
route = self.origin.add(route)
self.routes[route] = cmd
