We want to disable an ethernet interface (eth0) by default at startup with the ability to enable it temporarily at runtime. I can turn it off temporarily with
ifconfig eth0 down
But the interface will come up after the next boot. How can I apply this setting permanently?
Furthermore we want to have iptables active for filtering ethernet frames. We managed to built up an openembedded linux with iptables enabled through menuconfig. iptables seems to work, but there is also the question how to store the settings permanently (e.g. by using iptables-save to a dedicated location?)
Thanks in advance