Re: 802.1X: dhclient started before the auth. process ends

From: Lars Engels <lars.engels_at_0x20.net>
Date: Mon, 29 Jul 2013 16:03:53 +0200
On Mon, Jul 29, 2013 at 04:00:44PM +0200, Jean-Sébastien Pédron wrote:
> On 29.07.2013 15:34, Adrian Chadd wrote:
> > I think you were lucky.
> 
> I think you're right.
> 
> It works perfectly on FreeBSD 9.1, because wpa_supplicant finishes the
> auth process really quickly, ie. before dhclient receives an answer from
> dhcpd from the unauthenticated network:
> 
> Jul 29 15:39:46 - kernel: bge0: link state changed to UP
> Jul 29 15:39:46 - dhclient[46150]: DHCPREQUEST on bge0 to
> 255.255.255.255 port 67
> Jul 29 15:39:47 - wpa_supplicant[46119]: CTRL-EVENT-EAP-STARTED EAP
> authentication started
> ...
> Jul 29 15:39:47 - wpa_supplicant[46119]: CTRL-EVENT-EAP-SUCCESS EAP
> authentication completed successfully
> Jul 29 15:39:48 - dhclient[46150]: DHCPREQUEST on bge0 to
> 255.255.255.255 port 67
> Jul 29 15:39:48 - dhclient[46150]: DHCPACK from 192.168.200.224
> Jul 29 15:39:48 - dhclient: New IP Address (bge0): 192.168.200.91
> Jul 29 15:39:48 - dhclient: New Subnet Mask (bge0): 255.255.255.0
> Jul 29 15:39:48 - dhclient: New Broadcast Address (bge0): 192.168.200.255
> Jul 29 15:39:48 - dhclient: New Routers (bge0): 192.168.200.254
> 
> On -CURRENT, wpa_supplicant is started more than 10 seconds after the
> interface is UP and dhclient sent its request
> (http://pastebin.com/ZHcbHLQZ). Therefore, a lease from the
> unauthenticated network arrives first. It was working with a previous
> -CURRENT (buildworld from around April if memory serves).

AFAIK rpaulo_at_ imported a new version of wpa_supplicant into -CURRENT.

> 
> > dhclient shouldn't start running until wpa_supplicant has completed
> > authentication.
> 
> Damn, I always thought it worked this way on FreeBSD and happily laughed
> at "Linux co-workers" who use some kind of rc.local script to work
> around this issue :-) In fact, we're all in the same boat!
> 
> I may take a look at the issue. I guess the place to fix this is in the
> rc scripts. Does someone have a hint?


Received on Mon Jul 29 2013 - 12:03:55 UTC

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