how to run udcpc

[Rory Slegtenhorst]

satpal,

As Denis already explained, the script is a required feature of udhcpc.
As soon as udhcpc gets a lease, it runs the script setting various
variables you can then use.
They include your IP, netmask, DNS servers etc.

Within the script you are required to take appropiate measures eg.
Enable the interface using ifconfig, filling your resolv.conf with the
dns info, setting up your default gatewat.
udhcpc does nothing of that kind!!!!!

You obviously should read the manual about udhcp as I'm working with
it too and it works like a charm :)

Here's a copy of /usr/share/udhcpc/default.script:
#!/bin/sh

# udhcpc script edited by Tim Riker <Tim at Rikers.org>

[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1

RESOLV_CONF="/etc/resolv.conf"
[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
[ -n "$subnet" ] && NETMASK="netmask $subnet"

case "$1" in
	deconfig)
		/sbin/ifconfig $interface 0.0.0.0
		echo "0" > /tmp/udhcpc_lease
		;;

	renew|bound)
		/sbin/ifconfig $interface $ip $BROADCAST $NETMASK

		if [ -n "$router" ] ; then
			echo "deleting routers"
			while route del default gw 0.0.0.0 dev $interface ; do
				:
			done

			for i in $router ; do
				route add default gw $i dev $interface
			done
		fi

		echo -n > $RESOLV_CONF
		[ -n "$domain" ] && echo search $domain >> $RESOLV_CONF
		for i in $dns ; do
			echo adding dns $i
			echo nameserver $i >> $RESOLV_CONF
		done
		echo "1" > /tmp/udhcpc_lease
		;;
	leasefail)
		echo "0" > /tmp/udhcpc_lease
		;;
	*)
		echo "uDHCPc $1"
		;;
esac

exit 0

Cheers mate
-- 
Rory Slegtenhorst
rory dot slegtenhorst at gmail dot com