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problem with releasing a Dynamic IP address

hey
first, i use archlinux dis'.
i'm connected to the internet without dialer (some call it mpls)
the way to change the ipin windows is using this script

Code:

ipconfig /release

netsh interface ip set address "local area connection" static 192.168.0.10 255.255.255.0 192.168.0.1 1

ipconfig /release

netsh interface ip set address "local area connection" dhcp

and it's work fine.
i tried to make a similar script for arch- but my ip stay the same
what i do worng?

Code:

#! /bin/bash

INET_IP=`/sbin/ifconfig eth0 | grep 'inet addr' | awk '{print $2}'| sed -e 's/.*://'` #Get IP

echo your old ip was $INET_IP

dhcpcd eth0 -k

ifconfig eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255

sleep 2

dhcpcd eth0

sleep 2

INET_IP=`/sbin/ifconfig eth0 | grep 'inet addr' | awk '{print $2}'| sed -e 's/.*://'` #Get IP

echo your new ip is $INET_IP

ty!!

Quote:

i tried to make a similar script for arch- but my ip stay the same

I used your script on my Slackware box and it works fine. My box gets the same DHCP assigned IP also. The DHCP server cached the IP address for the requested MAC address and it hasn't expired yet. Nice script :)

if you get the same ip then the script isn't fine

Quote:

Originally Posted by bsdunix

The DHCP server cached the IP address for the requested MAC address and it hasn't expired yet. Nice script :)

then how u explain that this script working?

Code:

ipconfig /release

netsh interface ip set address "local area connection" static 192.168.0.10 255.255.255.0 192.168.0.1 1

ipconfig /release

netsh interface ip set address "local area connection" dhcp

http://i11.tinypic.com/4uizouq.jpg

Quote:

if you get the same ip then the script isn't fine

Quote:

then how u explain that this script working?

I did the DHCP/static changes several times on my Windows box, in about 50% of the time I either get the same IP or next incremented number. During my test, the Slackware box always gets the same IP. Why is Windows different? Must be a Windows thing. :) I don't have a scientific answer for you.