Re: [Bridge] Ubuntu: network bridging between wireless and wired connection fails

[Jochen Hebbrecht <jochenhebbrecht@gmail.com>]

Nicolas de Pesloüan schreef:
>
> I think that the "Destination Host Unreachable" is caused by some sort 
> of "down link", because wpa_supplicant failed to establish the wifi 
> link. When eth1 is part of the br0, packets received on eth1 is 
> "forwarded" to br0 and not available on eth1. So wpa_supplicant must 
> be instructed to listen for incoming packets on br0, not on eth1.
>
> Can you try the exact same configuration, adding wpa-bridge br0 in the 
> eth1 stanza, to inform wpa_supplicant where to listen from ?
>
> auto lo
> iface lo inet loopback
>
> auto eth1
> iface eth1 inet manual
> wpa-driver wext
> wpa-ssid ##SSID##
> wpa-ap-scan 1
> wpa-proto RSN
> wpa-pairwise CCMP
> wpa-group CCMP
> wpa-key-mgmt WPA-PSK
> wpa-psk ##PSK KEY##
> wpa-bridge br0          <--- HERE.
>
> auto br0
> iface br0 inet static
> bridge_ports eth1
> address 192.168.1.111
> netmask 255.255.255.0
> gateway 192.168.1.1
I changed the configuration and restarted the networking daemon. I'm 
getting this output

jochus@Bacardi ~ $ sudo /etc/init.d/networking restart
 * Reconfiguring network 
interfaces...                                                                                                                                                                              
ioctl[SIOCGIFINDEX]: No such device
Failed to open l2_packet connection for the bridge interface 'br0'
wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
run-parts: /etc/network/if-pre-up.d/wpasupplicant exited with return code 1

Waiting for br0 to get ready (MAXWAIT is 32 seconds).
                                                                                                                                                                              

I'm worried about the wpa_supplicant error. The file is present:

jochus@Bacardi ~ $ ls -al /sbin/wpa_supplicant
-rwxr-xr-x 1 root root 319812 2008-03-12 22:28 /sbin/wpa_supplicant

The output of ifconfig:

jochus@Bacardi ~ $ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use 
Iface
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 br0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 br0
0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 br0

jochus@Bacardi ~ $ ifconfig
br0       Link encap:Ethernet  HWaddr 00:15:00:1f:20:a6 
          inet addr:192.168.1.111  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::215:ff:fe1f:20a6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:720 (720.0 B)

eth0      Link encap:Ethernet  HWaddr 00:0a:e4:ae:7e:4c 
          UP 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:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:20 Base address:0xc000

eth1      Link encap:Ethernet  HWaddr 00:15:00:1f:20:a6 
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:5255 errors:12 dropped:12 overruns:0 frame:0
          TX packets:466 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:912108 (890.7 KB)  TX bytes:113643 (110.9 KB)
          Interrupt:21 Memory:c8006000-c8006fff

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:1974 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1974 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:101385 (99.0 KB)  TX bytes:101385 (99.0 KB)

The output of iwconfig of eth1

jochus@Bacardi ~ $ iwconfig eth1
eth1      unassociated  ESSID:"Jochus" 
          Mode:Managed  Frequency=2.462 GHz  Access Point: Not-Associated  
          Bit Rate:0 kb/s   Tx-Power=20 dBm   Sensitivity=8/0 
          Retry limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:146  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

The output of arp -an:

jochus@Bacardi ~ $ arp -an
? (192.168.1.1) at <incomplete> on br0