I want to route data between BT/6lowpan interface and wifi interface on a Raspberry Pi platform. Done all the setup as described below. But the Ping6 from Bluetooth (bt0) to Wifi (wlan0) not working.
ping6 from bt0 in RPI to a BT node working. Ping6 from wifi to internet working. Any suggestion where is the mistake?
Platform:
Raspberry Pi 3 Model B+ and Raspbian Stretch
My Setup is exactly like this:
Bluetooth Node <-- BT --> Raspberry Pi <-- Wifi --> 4G Wireless Router --> Internet
RPI Wifi gets 2405:204:1290:3eb1:ab2c:9c70:7c27:xxxx/64 address from 4G Wireless Router.
My etc/radvd.conf
interface bt0
{
AdvSendAdvert on;
AdvSourceLLAddress on;
prefix 2002::/64
{
AdvOnLink off;
AdvAutonomous on;
AdvRouterAddr on;
}; # End of prefix definition
};
I added a static IPv6 address to bt0:
Ip address add 2002::1/64 dev bt0
My “ip -6 addr show” gives:
ip -6 addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
inet6 2405:204:1290:3eb1:ab2c:9c70:7c27:xxxx/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::9ed1:3e80:de2a:e601/64 scope link
valid_lft forever preferred_lft forever
4: bt0: <MULTICAST,UP,LOWER_UP> mtu 1280 state UNKNOWN qlen 1000
inet6 2002::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::b827:ebff:fe3d:4f70/64 scope link
valid_lft forever preferred_lft forever
Other commands I have run:
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
ip route add 2002::/64 dev bt0
ip6tables -A FORWARD -i bt0 -o wlan0 -j ACCEPT
ip6tables -A FORWARD -i wlan0 -o bt0 -j ACCEPT
ip6tables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
service radvd restart
My “ip -6 route show” gives:
ip -6 route show
2002::/64 dev bt0 proto kernel metric 256 pref medium
2002::/64 dev bt0 metric 1024 pref medium
2405:204:1290:3eb1::/64 dev wlan0 proto kernel metric 303 mtu 1500 pref medium
fe80::/64 dev wlan0 proto kernel metric 256 pref medium
fe80::/64 dev bt0 proto kernel metric 256 pref medium
default via fe80::8bf:4ace:e70a:xxxx dev wlan0 metric 303 mtu 1500 pref medium
My ping6 from bt0 to wlan0 global address returns:
ping6 -I bt0 2405:204:1290:3eb1:ab2c:9c70:7c27:xxxx
connect: Network is unreachable
My ping6 from bt0 to wlan0 Link Local address returns:
ping6 -I bt0 fe80::9ed1:3e80:de2a:e601
PING fe80::9ed1:3e80:de2a:e601(fe80::9ed1:3e80:de2a:e601) from fe80::b827:ebff:fe3d:4f70%bt0 bt0: 56 data bytes
--- fe80::9ed1:3e80:de2a:e601 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1071ms
Where is the mistake and what extra I need to setup to get the ping6 working?
Gone through all the below links for guidelines:
https://devzone.nordicsemi.com/f/nordic-q-a/5481/making-ipv6-device-available-on-the-internet
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