access internet with usb gadget

[DJBean]

Using bridge:
if you do not have bridge-utils, you need install it.
under ubuntu:
# apt-get install bridge-utils
PCside, configure the bridge to let pc act as the virtual bridge :
(only once for below)
# brctl addbr br0 -- add one new bridge as br0
# brctl addif eth0 -- add the interface as eth0 for pc
lan
(after the usb gadget active, else there will be no usb0 virtual
network)
# brctl addif usb0 -- add the interface as usb0 connect
with beagleboard

Beagle board using dhcp to get the IP address since it already
bridged
# udhcpc -i usb0

Now you are free to access internet.
NOTES: need to set proxy if you inside private network as:
# export set http_proxy=PROXY_SERVER_IPADDRESS:PORT

[Peter Teoh]

I followed and got the following trace:

brctl addbr br0
brctl addif br0 usb0
brctl addif br0 eth0

and checking the ifconfig -a:

root@tthtlc-desktop:~# ping 10.10.1.153
root@tthtlc-desktop:~# ifconfig -a
br0 Link encap:Ethernet HWaddr 0a:3e:fa:39:8d:41
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

eth0 Link encap:Ethernet HWaddr 00:18:f3:b4:7e:ff
inet addr:10.10.1.155 Bcast:10.10.1.255 Mask:255.255.255.0
inet6 addr: fe80::218:f3ff:feb4:7eff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11576 errors:0 dropped:0 overruns:0 frame:0
TX packets:10021 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:11526200 (11.5 MB) TX bytes:1576172 (1.5 MB)
Interrupt:17

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:110 errors:0 dropped:0 overruns:0 frame:0
TX packets:110 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9676 (9.6 KB) TX bytes:9676 (9.6 KB)

pan0 Link encap:Ethernet HWaddr 16:62:a5:45:2e:7f
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

usb0 Link encap:Ethernet HWaddr f2:7c:70:c2:e0:6d
inet6 addr: fe80::f07c:70ff:fec2:e06d/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:90 (90.0 B)

root@tthtlc-desktop:~# udhcpc -i usb0
udhcpc (v0.9.9-pre) started
Sending discover...
Sending discover...
Sending discover...
Lease failed:
Sending discover...
Sending discover...
Sending discover...
Lease failed:
Sending discover...
Sending discover...
Sending discover...
Lease failed:

any clue?

generally, immediately after i did the "brctl addbr" command, as shown
below, my connection with the gateway (10.10.1.153) will be
disconnected:

brctl addbr br0
root@tthtlc-desktop:~# brctl addif br0 eth0
root@tthtlc-desktop:~# brctl addif br0 usb0
root@tthtlc-desktop:~# ping 10.10.1.153
PING 10.10.1.153 (10.10.1.153) 56(84) bytes of data.
^C
--- 10.10.1.153 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2015ms

why?

to send this posting out to internet, i have to remove the bridge br0
via "brctl delbr br0".