libip4tc2 - 1.8.10-4+b1 main

The iptables/xtables framework has been replaced by nftables. You should
consider migrating now.
.
This package contains the user-space iptables (IPv4) C library from the
Netfilter xtables framework.
.
iptables IPv4 ruleset ADT and kernel interface.
.
This library has been considered private for years (and still is), in the
sense of changing symbols and backward compatibility not guaranteed.