#!/bin/bash
# run dhclient.d scripts in an emulated environment
PATH=/bin:/usr/bin:/sbin
SAVEDIR=/var/lib/dhclient
ETCDIR=/etc/dhcp
interface=$1
eval "$(
declare | LC_ALL=C grep '^DHCP4_[A-Z_]*=' | while read -r opt; do
optname=${opt%%=*}
optname=${optname,,}
optname=new_${optname#dhcp4_}
optvalue=${opt#*=}
echo "export $optname=$optvalue"
done
)"
[ -f /etc/sysconfig/network ] && . /etc/sysconfig/network
[ -f /etc/sysconfig/network-scripts/ifcfg-$interface ] && \
. /etc/sysconfig/network-scripts/ifcfg-$interface
if [ -d $ETCDIR/dhclient.d ]; then
for f in $ETCDIR/dhclient.d/*.sh; do
if [ -x $f ]; then
subsystem="${f%.sh}"
subsystem="${subsystem##*/}"
. ${f}
if [ "$2" = "up" ]; then
"${subsystem}_config"
elif [ "$2" = "dhcp4-change" ]; then
if [ "$subsystem" = "chrony" -o "$subsystem" = "ntp" ]; then
"${subsystem}_config"
fi
elif [ "$2" = "down" ]; then
"${subsystem}_restore"
fi
fi
done
fi