Re: Why whenever I enable the WiFi interface NM sends a DHCPDISCOVER if still not associate with any AP?

[Dan Williams <dcbw redhat com>]

On Sat, 2009-02-07 at 16:24 +0000, Stolz wrote:
> Whenever I switch from wired to wireless interface, it takes more than
> 45 seconds to get the wireless interface enabled. Looking at the logs,
> seems the problem is (k)Networkmanager sends a DHCPDISCOVER before
> been associated with any AP:

Can you post some logs from when you enable the wireless interface?  The
logs you've got start too late to be able to see exactly what's
happening.

NM *should* be associating with the AP first (including all security
setup), and only when the wifi card says it's successfully associated
with the AP, will NetworkManager begin DHCP.

Dan


> Feb  7 18:03:58 vostro NetworkManager: <info>  DHCP daemon state is
> now 1 (starting) for interface wlan0
> Feb  7 18:03:59 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 3
> Feb  7 18:04:02 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 7
> Feb  7 18:04:09 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 8
> Feb  7 18:04:17 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 10
> Feb  7 18:04:27 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 10
> Feb  7 18:04:37 vostro dhclient: DHCPDISCOVER on wlan0 to
> 255.255.255.255 port 67 interval 9
> Feb  7 18:04:42 vostro NetworkManager: <info>  Device 'wlan0' DHCP
> transaction took too long (>45s), stopping it.
> 
> I'm not a network expert but, AFAIK, if you are not associated with
> any AP, there is no link so sending a DHCP petition makes no sense for
> me. Can someone explain me this behaviour? It's annoying having to
> wait almost a minute every time I want to use WiFi.
> 
> Thanks.
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