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#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
setup_interface() {
ip=$new_ip_address
mtu=$new_interface_mtu
mask=$new_subnet_mask
bcast=$new_broadcast_address
gw=${new_routers%%,*}
domain=$new_domain_name
search=$(printf "$new_domain_search")
namesrv=$new_domain_name_servers
hostname=$new_host_name
[ -f /tmp/net.$netif.override ] && . /tmp/net.$netif.override
# Taken from debian dhclient-script:
# The 576 MTU is only used for X.25 and dialup connections
# where the admin wants low latency. Such a low MTU can cause
# problems with UDP traffic, among other things. As such,
# disallow MTUs from 576 and below by default, so that broken
# MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
if [ -n "$mtu" ] && [ $mtu -gt 576 ] ; then
echo "if ! ip link set $netif mtu $mtu ; then"
echo "ip link set $netif down"
echo "ip link set $netif mtu $mtu"
echo "ip link set $netif up"
echo wait_for_if_up $netif
echo "fi"
fi > /tmp/net.$netif.up
echo ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif >> /tmp/net.$netif.up
[ -n "$gw" ] && echo ip route add default via $gw dev $netif > /tmp/net.$netif.gw
[ -n "${search}${domain}" ] && echo "search $search $domain" > /tmp/net.$netif.resolv.conf
if [ -n "$namesrv" ] ; then
for s in $namesrv; do
echo nameserver $s
done
fi >> /tmp/net.$netif.resolv.conf
# Note: hostname can be fqdn OR short hostname, so chop off any
# trailing domain name and explicity add any domain if set.
[ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
}
PATH=/usr/sbin:/usr/bin:/sbin:/bin
export PS4="dhclient.$interface.$$ + "
exec >>/run/initramfs/loginit.pipe 2>>/run/initramfs/loginit.pipe
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
# We already need a set netif here
netif=$interface
# Huh? Interface configured?
[ -f "/tmp/net.$netif.up" ] && exit 0
case $reason in
PREINIT)
echo "dhcp: PREINIT $netif up"
ip link set $netif up
wait_for_if_up $netif
;;
BOUND)
echo "dhcp: BOND setting $netif"
if ! arping -q -D -c 2 -I $netif $new_ip_address ; then
warn "Duplicate address detected for $new_ip_address while doing dhcp. retrying"
exit 1
fi
setup_interface
set | while read line; do
[ "${line#new_}" = "$line" ] && continue
echo "$line"
done >/tmp/dhclient.$netif.dhcpopts
echo online > /sys/class/net/$netif/uevent
if [ -e /tmp/net.$netif.manualup ]; then
/sbin/netroot $netif -m
rm -f /tmp/net.$netif.manualup
else
initqueue --onetime --name netroot-$netif netroot $netif
fi
;;
*) echo "dhcp: $reason";;
esac
exit 0
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