Solve a warning occuring while updating your debian based system.
I often runned through an issue when updating my system. I would get warnings about some possible missing firmwares:
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8168f-2.fw for module r8169
W: Possible missing firmware /lib/firmware/rtl_nic/...
W: Possible missing firmware /lib/firmware/rtl_nic/...
W: Possible missing firmware /lib/firmware/rtl_nic/...
...
This python script read the warnings from a file given in parameter, download them and install them for you.