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

["Nicolas de Pesloüan" <nicolas.2p.debian@free.fr>]

Jochen Hebbrecht wrote:
> Maybe my picture isn't very clear, but my WAN access is on location A. 
> There's a router which receives an ip from the ISP. On the other side, 
> I'm having a 192.168.1.0/24 network

> $ cat /etc/network/interfaces
> 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##
> 
> auto br0
> iface br0 inet static
> bridge_ports eth1
> address 192.168.1.111
> netmask 255.255.255.0
> gateway 192.168.1.1
> 

> $ ping 192.168.1.1
> PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
>  From 192.168.1.111 icmp_seq=2 Destination Host Unreachable
>  From 192.168.1.111 icmp_seq=3 Destination Host Unreachable
>  From 192.168.1.111 icmp_seq=5 Destination Host Unreachable
>  From 192.168.1.111 icmp_seq=6 Destination Host Unreachable
> 
> So here it goes wrong. I didn't execute any other steps as step 2 fails 

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

If this fail, please provide the output of i_w_config eth1 and arp -an.

	Nicolas.