I am going to do this example for the 'ppp' modules. If you need other modules, make adjustments as nessasary.
sudo apt update
sudo apt install libncurses5-dev
sudo apt install build-essential
sudo apt install bc
sudo apt install linux-image-extra
sudo depmod -a
sudo modprobe configs
os_version=`awk -F[=,] '{print $2}' /etc/os_version`
arch=`awk -F[=,] '{print $6}' /etc/os_version`
kernel_version=`uname -r`
cd ~ mkdir src
cd src
wget https://www.downloads.netgear.com/files/GPL/ReadyNASOS_V${os_version}_WW_src.zip
mkdir ReadyNAS
cd ReadyNAS
7z x ../ReadyNASOS_V${os_version}_WW_src.zip
cd linux-${kernel_version%.*.*}-$arch
zcat /proc/config.gz > .config
make menuconfig
Nav to Device Drivers-->Network device support expand with an M "PPP (point-to-point protocol) support" Mark wtih an M: PPP MPPE compression (encryption) PPP support for async serial ports Mark with a * (space bar) PPP filtering exit/save
make prepare
make modules_prepare
make
cd ~/src
mkdir debian
cd debian
mkdir DEBIAN
mkdir -p lib/modules/${kernel_version}/kernel/lib
mkdir -p lib/modules/${kernel_version}/kernel/drivers/net/ppp
mkdir -p lib/modules/${kernel_version}/kernel/drivers/net/slip
cp ~/src/ReadyNAS/linux-${kernel_version%.*.*}-$arch/drivers/net/ppp/*.ko ~/src/debian/lib/modules/${kernel_version}/kernel/drivers/net/ppp/
cp ~/src/ReadyNAS/linux-${kernel_version%.*.*}-$arch/drivers/net/slip/*.ko ~/src/debian/lib/modules/${kernel_version}/kernel/drivers/net/slip/
cp ~/src/ReadyNAS/linux-${kernel_version%.*.*}-$arch/lib/crc-ccitt.ko ~/src/debian/lib/modules/${kernel_version}/kernel/lib/
printf "Package: ppp-kernel-modules\nVersion: $os_version\nSection: custom\nPriority: optional\nArchitecture: all\nEssential: no\nInstalled-Size: $(du --max-depth=0 | awk '{print $1}')\nMaintainer: Me\nDescription: Custom modules\n" > DEBIAN/control
cd ..
dpkg-deb --build debian
mv debian.deb ppp-kernel-modules.deb
sudo dpkg -i ppp-kernel-modules.deb
sudo depmod -a
