[ltp] Release/renew ip address on T21?

[Meidinger Chris]

i have to do this *all* the time in different networks, and just do #sudo
dhclient ethX, which works like a charm.

> -----Original Message-----
> From: linux-thinkpad-admin@linux-thinkpad.org 
> [mailto:linux-thinkpad-admin@linux-thinkpad.org] On Behalf Of 
> Crispian Thorne
> Sent: Sunday, April 24, 2005 4:18 AM
> To: linux-thinkpad@linux-thinkpad.org
> Subject: [ltp] Release/renew ip address on T21?
> 
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> Does anyone know a way to release and renew an IP address?
> 
> I'm using Libranet 3.0 (Debian-based, 2.6.11, ACPI etc.) on a Thinkpad
> T21 with a Sony-Ericsson GC79 card using ndiswrapper. WiFi 
> works great,
> but I often move around between networks (and access points) and have
> problems trying to connect to a new network I've moved into.
> 
> My home is in the basement of the church where I work, and I have a
> network there "Homestarrunner"- ch. 11, and up in the church I have
> another different network with a both a master access point 
> "Marzipan"-
> ch. 11, and another router with DHCP etc. turned off as another access
> point "wwjd" on Ch. 9.
> 
> I can connect absolutely fine to any of the three if I boot 
> within their
> range, a simple "ifup wlan0" brings it right up. The problem 
> comes when
> I move from one to another- the computer hangs onto whatever 
> ip address
> it originally got, and this will not work within another's range. (And
> I've tried naming the two that are on the same network the same- still
> won't work). What I need to be able to do is force it to drop it's ip
> address and go look for another DHCP lease.
> 
> A simple "ifdown wlan0" "ifup wlan0" won't do it, nor will
> "/etc.init.d/networking restart". I installed wifi-radar, and 
> while that
> gives a lovely gui of available network it won't release/renew an ip
> address, nor will the gnome networking panel applet (though this
> actually seems the most promising). I also installed dhclient and have
> tried "dhclient wlan0 -r", which should work according to the 
> man page,
> but comes up as an unrecognised parameter. I've even tried popping out
> the card and reseating it- still no good.
> 
> There *has* to be a simple way to make my T21 release/renew (I mean-
> it's easy in windo$e- and I refuse to believe that there's something
> winblows does better!). Can someone out there help me?
> 
> - --
> Crispian Thorne
> linux@crispian.org
> *linux & lovin' it*
> Linux User # 329400
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