Maintance iptables kernel module missing after upgrade from Ubuntu 18.04 -> 20.04

 Salah satu cara untuk melakukan maintance dari iptables

sudo apt-get install --reinstall iptables

sudo apt-get install --reinstall linux-headers-$(uname -r)

sudo dpkg-reconfigure iptables

dkms autoinstall

To get the same error by typing:

iptables -L

I've already upgrade my kernel with:

sudo apt-get update
sudo apt-get full-upgrade

I've tried to reboot the system but it didn't work.