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

Jochen Hebbrecht jochenhebbrecht at gmail.com
Wed Apr 29 23:30:31 PDT 2009


2009/4/30 richardvoigt at gmail.com <richardvoigt at gmail.com>:
>
>
> On Wed, Apr 29, 2009 at 9:21 PM, Jochen Hebbrecht
> <jochenhebbrecht at gmail.com> wrote:
>>
>> Ross Vandegrift schreef:
>>
>> On Wed, Apr 29, 2009 at 06:40:25PM +0200, Jochen Hebbrecht wrote:
>>
>>
>> Yes, it is plugged in ( Ubuntu says: link is ready ).
>> I also tried statically, but no improvements :-( ...
>>
>>
>> Is your wireless access point also bridging between the wired and the
>> wireless?  If so, then you have two bridges circulating packets
>> between the wired and wireless networks.
>>
>>
>> What do you mean with "wireless access point"? My eth1? I think the bridge
>> is ok. In one of my previous mails, you see the sniffer logging DHCP
>> discovers on eth0 AND eth1
>
> That's at the IP stack.  At the firmware level, most wireless cards will
> refuse to transmit/receive packets with other MAC addresses, making them
> useless for AP or bridging.  Yours is apparently not one of those since
> bridging works in Windows (or else the Windows bridge code does transparent
> routing w/MAC address replacement, rather like NAT or PAT but working at
> layer 2 instead of 3).
>
> That's why I suggested testing for the DHCP discover on a different wireless
> node.

Hmm, can you explain to me how I can try to use a different wireless node?


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