This tool allows to filter incoming IP list stream using another IP/subnet/range list. Available modes are exclude and intersect.
Command line parameters :
-4 ; ipv4 list (default)
-6 ; ipv6 list
--mode ; intersect or exclude
--filter ; filter subnet list file
Input must be ip address list read from stdin. May not include subnets and ranges but allows /32 or /128.
Filter may contain ip addresses, ranges ip1-ip2 and ip/prefixlen
Output goes to stdout.