python - 如何使用 netaddr python 库将网络掩码转换为通配符？

Question

我想使用 netaddr 库将 netmask 转换为 wildcard mask

所以输入是 netmask = 255.255.255.0 输出是 wildcard = 0.0.0.255

或者输入是 netmask = 255.255.255.252 并且输出是 wildcard = 0.0.0.3

Answer 1

netaddr 不支持非连续的通配符，但是 cisco-acl 可以帮助玩通配符

from cisco_acl import AddressAg

address = AddressAg("0.0.0.0 255.255.255.0")
mask = address.subnet.split()[1]
wildmask = address.wildcard.split()[1]
print(mask)  # 255.255.255.0
print(wildmask)  # 0.0.0.255