Bug#1043407: configure-edu-gateway does not enable nat/ip forwarding due to missing iptables

[Guido Berhoerster <guido@berhoerster.name>]

Package: debian-edu-config
Version: 2.12.33

Setting up a router following the documentation at
https://wiki.debian.org/DebianEdu/Documentation/Bookworm/Requirements
by doing a minimal install and and running the setup script

/usr/share/debian-edu-config/tools/configure-edu-gateway --firewall=no

does not suffice to create a working router because iptables is not
installed and the enable-nat service/init script will not configure
forwarding.

This could be fixed by
1. amending the documentation to manually install iptables
2. installing iptables in the configure-edu-gateway script
3. adding iptables to the minimal installation

Suggestions?
-- 
Guido Berhoerster