network init script

[Moritz Heiber]

On Wed, 21 Jan 2004 12:07:23 +0100
Moritz Heiber <moe at lunar-linux.org> wrote:

> Hello,
> 
> due to the fact that I had to get in touch with dhcp/routing/network
> stuff recently (New laptop arrived and had to be integrated into my
> already existing (fairly easy structured) network). Now .. I noticed
> that if (for whichever reason possible) the network inititation fails
> the network scripts returns [ OK ] where it should return an error. I
> haven't found the cause for that problem but for another one I
> encoutered:
> 
> When taking down the network manually (for me) none of the brought up
> network devices is taken down via ifconfig. I examened the network
> script and found the following:
> 
> case $ADDRESS in
>             [dD][hH][cC][pP])
>                 if [ -z $DHCP_CLIENT ]; then
>                     echo "Device $1: missing DHCP client";
>                     return -1;
>                 fi;
>                 case $DHCP_CLIENT in
>                     [dD][hH][cC][pP][cC][dD])
>                         PIDFILE=/etc/dhcpc/dhcpcd-$1.pid
>                         RUNFILE=/usr/sbin/dhcpcd
>                     ;;
>                     [dD][hH][cC][lL][iI][eE][nN][tT])
>                         PIDFILE=/var/run/dhclient-$1.pid
>                         RUNFILE=/sbin/dhclient
>                         DHCP_OPTIONS="$DHCP_OPTIONS -pf $PIDFILE -lf
> /var/state/dhcp/dhclient-$1.leases"                    ;;
>                     [uU][dD][hH][cC][pP][cC])
>                         PIDFILE=/var/run/udhcpc-$1.pid
>                         RUNFILE=/sbin/udhcpc
>                         DHCP_OPTIONS="$DHCP_OPTIONS -p $PIDFILE -i"
>                     ;;
>                 esac
>                 if [ ! -x $RUNFILE ]; then
>                     echo "$DHCP_CLIENT not installed";
>                     return -1;
>                 fi;
>                 if [ -e $PIDFILE ]; then
>                     if [ $(ps ax | grep `cat $PIDFILE` | grep -v grep
>                     |
> wc -l) -ge 1 ]; then                        echo "Device $1: already
> started";                        return -1;
>                     else
>                         rm -f $PIDFILE;
>                     fi;
>                 fi;
>                 $RUNFILE $DHCP_OPTIONS $1 >/dev/null 2>&1;
>                 sleep 1;
>                 if [ ! -e $PIDFILE ]; then
>                     echo "Device $1: DHCP failed";
>                     return -1;
>                 fi;
>             ;;
> 
> This is from the device_stop() function. As you can see we're looking
> for the certain dhcp client and execute `dhcpcd -k` if the dhcpcd
> client is used. Now, from my understanding right after that the case
> function is closed and ifconfig <device> down is never been executed
> ever. Maybe my bash is not good enough and I don't see the pattern ;-)
> .. but please give me a hint. Thanks.
> 
> Bye,
> 
> Moritz

Please forget about it. I discovered that cause of it all is my crappy
noname router (I'm going to replace it as soon as possible) that doesn't
hand out proper lease times in combination with dhcpcd which doesn't
make friends with infinite lease times. :-(

Sorry for the noise.

Moritz

-- 
Moritz Heiber

Lunar Linux developer: http://www.lunar-linux.org
XFce4 desktop environment: http://xfce.org
Moritz Heiber[at]SPLiNe: http://moe.spline.de
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