Hi All,
We are trying to setup NAP server over WLAN bridge. The remote PANU is
able to connect to the NAP server, while it is unable to browse/ping
to network.
For setting up NAP, we are using BlueZ 5.41 underlying kernel 4.9.0.
We do follow below steps to setup bridge and connect BNEP over same,
Bringup WLAN:
wlan0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet addr:192.168.43.100 Bcast:192.168.43.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:890 (890.0 B) TX bytes:1862 (1.8 KiB)
Setup bridge:
# brctl addbr br0
# ip addr add 192.168.100.1 dev br0
# ip link set br0 up
# ifconfig
br0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet addr:192.168.43.7 Bcast:0.0.0.0 Mask:255.255.255.255
inet6 addr: fe80::94a7:c5ff:fe36:c3d6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:7 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:640 (640.0 B)
Iptable setup:
# iptables -A FORWARD -i wlan0 -o br0 -m state --state
ESTABLISHED,RELATED -j ACCEPT
echo " Enabling SNAT (MASQUERADE) functionality on $EXTIF"
# iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
echo " Enabling forwarding.."
# echo "1" > /proc/sys/net/ipv4/ip_forward
To power on BT,
-> hciconfig hci0 up
-> hciconfig hci0 piscan
-> Run bluetoothd with "-ndE"
-> tools/test-nap br0 &
-> bluetoothctl
# agent on
# default agent
# pair <dev_addr>
# trust <dev_addr>
Now initiate NAP connection from remote device (Android device). The
device gets connected to NAP server with below bnep configuration
(without configuring inet). Though it says connected, on Android
device we are unable to ping/browse to internet.
bluetoothd[737]: src/agent.c:agent_ref() 0x9856c90: ref=3
bluetoothd[737]: src/agent.c:agent_unref() 0x9856c90: ref=2
bluetoothd[737]: src/agent.c:agent_unref() 0x9856c90: ref=1
bluetoothd[737]: profiles/network/bnep.c:bnep_getsuppfeat() supported
features: 0x1
bluetoothd[737]: bnep: bridge br0: interface bnep0 added
#ifconfig
bnep0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet6 addr: fe80::7aff:57ff:fe00:a400/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1845 (1.8 KiB) TX bytes:80 (80.0 B)
Even though no ip address assigned dynamically for bnep after
connection, configured static IP, but still not able to browse/ping.
Please provide your input to resolve the issue.
Thanks & Regards
Bheemsen
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