DWL-650/DHCP/IP Problems

vda vda at port.imtp.ilyichevsk.odessa.ua
Tue Feb 17 02:14:51 EST 2004


On Tuesday 17 February 2004 08:05, Pavel Roskin wrote:
> On Mon, 16 Feb 2004, Kalyan Ram Chintalapati wrote:
> > Output from iwconfig wlan0 >>after dhcpcd<<
> >
> > linux:/usr/src/hostap/utils # iwconfig wlan0
> > wlan0           IEEE 802.11b  ESSID:"cuarinet" Nickname:"linux"
> >                  Mode:Managed  Frequency:2.467GHz  Access Point:
> > 44:44:44:44:44:44
> >                  Bit Rate:11Mb/s   Sensitivity=1/3 Retry limit:16   RTS
> > thr:off   Fragment thr=2312 B
> >                  Encryption key:blah-blah-blah-blah-blah-blah-bl  
> > Security mode:restricted
> >                  Power Management:off
> >                  Link Quality:27/70  Signal level:-58 dBm Noise level:-86
> > dBm Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0 Tx excessive
> > retries:0  Invalid misc:8461  Missed beacon:0
>
> The firmware has survived, but the card has disconnected.  I think dhcpcd
> just brings the interface down for a short time to set the new interface
> parameters.  I remember reading about this problem long ago.  You can
> patch dhcpcd not to bring the interface down.  This hack should help you -
> it makes dhcpcd never bring the interface down (patch against
> dhcpcd-1.3.22-pl4):

Also consider using udhcpcd (either standalone udhcpcd or better, the one
integrated in busybox). It's a much saner thing. It never fiddles with
an interface, it just runs a shell script of your choice whenever
it detects DHCP state change.
-- 
vda



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