Request: Open FORWARD between the Systemcore's WiFi/USB subnets and eth0

[j0n5m1th]

Desired Workflow:

• Connect a laptop to the Systemcore WiFi and be able to interact with FRC Radio and attached coprocessors. (handy for in-shop use)
• USB device (ex. USB-Ethernet adapter as tether for 1 more coprocessor on radio) connected to the Systemcore and be able to interact with the FRC Radio & attached coprocessors.

Blocker:

• FORWARD policy is DROP with no rule between wlan0/usb+ and eth0 - nothing on the Systemcore's WiFi or USB ports can reach the robot network, only the Systemcore.

Request:

• Open FORWARD between the Systemcore WiFi/USB subnets and eth0.

Tested:

iptables -N ROBOT-SEGMENT-FWD
iptables -A ROBOT-SEGMENT-FWD -i usb+ -o eth0 -j ACCEPT
iptables -A ROBOT-SEGMENT-FWD -i wlan0 -o eth0 -j ACCEPT
iptables -A ROBOT-SEGMENT-FWD -i eth0 -o usb+ -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -A ROBOT-SEGMENT-FWD -i eth0 -o wlan0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
iptables -I FORWARD -j ROBOT-SEGMENT-FWD

iptables -t nat -A POSTROUTING -o eth0 ! -s 172.17.0.0/16 -j MASQUERADE