Inspired by https://forum.vyos.io/t/wireless-ac-capabilities/2672/6 we should think about dropping the firmware-* packages from Debian Jessie as they do not ship all the latest Firmware code required by ou much newer Kernel 4.14.
e.g https://packages.debian.org/jessie/firmware-iwlwifi has version 0.43 on VyOS which lacks the iwlwifi-7260-17 driver. On the other hand, the latest master branch of https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git has everything we need to support the latest WiFi card.
@dmbaturin @UnicronNL you are the VyOS custom Debian package guys :)