I would like to be able to get an ip filter using netaddr in python but I don't know how to subtract two ips to create on CIDR range. Instead I am getting two separate ranges.
from netaddr import *
allnets = IPSet(['0.0.0.0/0'])
ip = IPSet(['8.8.8.8', '8.8.8.4'])
for ips in ip:
print allnets - ip
I would like to get one IPset object that filters both ips, not two sets of ranges that filter each ip.
The expression you are searching for is allnets - ip. That produces "one IPset object that filters both ips".
Consider this program:
from netaddr import *
allnets = IPSet(['0.0.0.0/0'])
ip = IPSet(['8.8.8.8', '8.8.8.4'])
filtered = allnets - ip
assert '8.8.8.8' not in filtered
assert '8.8.8.4' not in filtered
assert '8.8.8.7' in filtered
assert '192.0.2.17' in filtered
assert '203.0.113.1' in filtered