xtables-addons-source - 3.13-1+deb11u1 main

Xtables-addons provides extra modules for iptables not present in the
kernel, and is the successor of patch-o-matic.
Extensions includes new targets like TEE, TARPIT, CHAOS, or modules like
geoip and account.
.
This package provides the source code for the xtables-addons kernel modules.
The xtables-addons package is also required in order to make use of these
modules. Kernel source or headers are required to compile these modules.