def __init__(self, network):
if "/" not in network:
logging.critical("No prefix length specified for network '%s'",
network)
try:
self._net = ip_network(network)
except ValueError:
logging.critical("Invalid network '%s'", network)
sys.exit(1)
self._subnets = defaultdict(lambda: AddressGenerator())
self._allocations = defaultdict(list)
# Initialise the allocations with the supplied network, making sure to
# exclude 127.0.0.0/30 (for v4) and DEFAULT6_NETWORK_ADDR/126 (for v6)
# if it's contained in the network.
# - .0 is treated as a broadcast address by the kernel
# - .1 is the normal loopback address
# - .[23] are used for clients to bind to for testing purposes.
if self._net.version == 4:
exclude = ip_network("127.0.0.0/30")
else:
exclude = ip_network(DEFAULT6_NETWORK_ADDR + "/126")
if self._net.overlaps(exclude):
self._exclude_net(self._net, exclude)
return
self._allocations[self._net.prefixlen].append(self._net)
def __init__(self, network):
self._net = ip_network(network)
if "/" not in network:
logging.critical("No prefix length specified for network '%s'",
network)
sys.exit(1)
self._subnets = defaultdict(lambda: AddressGenerator())
self._allocations = defaultdict(list)
# Initialise the allocations with the supplied network, making sure to
# exclude 127.0.0.0/30 if it's contained in the network.
# - 127.0.0.0 is treated as a broadcast address by the kernel
# - 127.0.0.1 is the normal loopback address
# - 127.0.0.[23] are used for clients to bind to for testing purposes.
v4_lo = ip_network("127.0.0.0/30")
if self._net.overlaps(v4_lo):
self._exclude_net(self._net, v4_lo)
else:
self._allocations[self._net.prefixlen].append(self._net)
