%general-entities; ]> network configuring Which interfaces are brought up and down by the network utilities depends on the files and directories in the /etc/network directory. The interfaces file should contain a description of the interfaces, as done by Debian, and each of the directories contain scripts for actions to perform on each type of network event. The following command creates the required directories and the interfaces file, assuming DHCP will be used for eth0: mkdir -pv ${CLFS}/targetfs/etc/network/if-{post-{up,down},pre-{up,down},up,down}.d mkdir -pv ${CLFS}/targetfs/usr/share/udhcpc cat > ${CLFS}/targetfs/etc/network/interfaces << "EOF" auto eth0 iface eth0 inet dhcp EOF For DHCP to work properly with udhcpc, the BusyBox dhcp client, a configuration script is needed. Create a simple script to assign the provided DHCP address and update /etc/resolv.conf: cat > ${CLFS}/targetfs/usr/share/udhcpc/default.script << "EOF" #!/bin/sh # udhcpc Interface Configuration # Based on http://lists.debian.org/debian-boot/2002/11/msg00500.html # udhcpc script edited by Tim Riker <Tim@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 ;; renew|bound) /sbin/ifconfig $interface $ip $BROADCAST $NETMASK if [ -n "$router" ] ; then while route del default gw 0.0.0.0 dev $interface ; do true 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 nameserver $i >> $RESOLV_CONF done ;; esac exit 0 EOF chmod +x ${CLFS}/targetfs/usr/share/udhcpc/default.script