Forwarding must be enabled root@raspbx:~# cat /proc/sys/net/ipv4/ip_forward 0 root@raspbx:~# sysctl -w net.ipv4.ip_forward=1 net.ipv4.ip_forward = 1 root@raspbx:~# cat /proc/sys/net/ipv4/ip_forward 1 root@raspbx:~#