How to bind a route to a network adapter and not IP

[Etienne Robillard]

On 06/17/2012 03:52 PM, Hans Petter Selasky wrote:
> On Friday 15 June 2012 19:02:27 animelovin at gmail.com wrote:
>> Perhaps you can ask the very same question in another way so its easier
>> to understand why you losing packets? All in all I always thought TCP/IP
>> was the basic unit in Internet based networking but feel free to correct
>> me if you have any news I might have missed... :)
>>
>> Also do you have any idea why AMD based CPUs could be vulnerable to this
>> alternative networking scheme and cause a remote denial service in fbsd
>> stable but not in CURRENT?
>>
>> Thanks,
>>
>> Etienne
>
> Hi,
>
> I loose packets because I use a WLAN adapter. Sometimes the link is down for
> various reasons, and then the routes start changing for manually created
> routes, and I want to prevent that.
>
> --HPS

Hi Hans,

As per the usual PR triage workflow, I recommend you fill a bug report 
and add me to the CC list. :-)

And based on your comment I figure I'm not the only one to complain with 
recent FreeBSD TCP/IP based networking issues...

*** TEMPORARY SOLUTION *** WORKAROUND ***

As a workaround, or until FreeBSD has approved a WITHOUT_OFDM option,
I recommend you consider one of the following options:

1. Change your network adapter to Ethernet-class carrier for TCP/IP 
dynamic routing.

2. Switch to CCK modulation (if you really MUST stick with wireless IP 
encapsulation.... .)

% ifconfig <netdev> mode 11b
% man ifconfig(8) for more info.

In case you really want to stick with wireless based carrier (HIGHLY NOT 
RECOMMENDED for *ALL* FreeBSD users until it has been demonstrated that 
there is no privacy disclosure or potential health issues with any 
wireless frequency modulation scheme), consider using CCK modulation 
(802.11b) which should be point-to-point modulation scheme.

Btw I believe this is a separate issue than the previous OpenSSL/libpng 
remote vulnerability (sysret) discussed a few days ago but as you 
comment suggest this bug should only imply wireless-based devices
using the iEEE 802.11 stack for high-speed frequency modulation.

Regards,

Etienne

References
----------

1. http://lists.freebsd.org/pipermail/freebsd-chat/2011-March/006577.html
2. https://gthc.org/wiki/Advisories/OFDM_20110315

-- 
Etienne Robillard
Occupation: Software Developer
Company:    Green Tea Hackers Club
Email:      erob at gthcfoundation.org
Website:    gthcfoundation.org
Skype ID:   incidah

"Socialism is a philosophy of failure, the creed of ignorance, and the 
gospel of envy, its inherent virtue is the equal sharing of misery."
-- Winston Churchill