Hello every body.
I just reinstall my Raspberry Pi with the 3G/4G & LTE Base HAT and it works well.
I need to connect a second Raspberry to the ethernet port and both must have access to internet throught the wwan0. Specially the second Raspberry must have access to internet through the first which has the 4G HAT.
Addtionnaly, on the first PI, I configured it as a hotspot following that procedure but it look not the best because it show how to share wlan0 with eth0.
I also read this very useful tuto from sixfab
and I can see something very interresting comparing the first tuto from Raspebrry fundation
sudo iptables -t nat -A POSTROUTING -o wwan0 -j MASQUERADE
But my first important question, the SIXFAB tutorial configure the IP address in /etc/network/interfaces. On my Raspberry id do
less /etc/network/interfaces, I can read
#/etc/network/intercaes
#Please note that this file is written to be used with dhcpcd
#For static IP, consult /etc/dhcpcd.conf and ‘man dhcpcd.conf’
Secondely, I also can read
sudo sh -c "iptables-save > /etc/iptables.ipv4.nat"
while the Raspberry tutorial they use
sudo netfilter-persistent save
Additonally SIXFAB privide a important script /etc/wwan2lan.sh
I would prefer to use /etc/dhcpcd.conf instead of /etc/network/interfaces
As the SIXFAB tuto has no date, I wonder which is the best practice.
Someone can tell me the best way to do it versu this article https://www.raspberrypi.org/documentation/configuration/wireless/access-point-routed.md ?
My goal is to provide an internet access from eth0 to wwan0. I also need to use wlan0 to access my raspberry, and if wlan0 (as a hotspot) can access internet vis wwan0 would be perfect
many thanks for your help