83 lines
2.3 KiB
Bash
Executable File
83 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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setup_interface() {
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ip=$new_ip_address
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mtu=$new_interface_mtu
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mask=$new_subnet_mask
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bcast=$new_broadcast_address
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gw=${new_routers%%,*}
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domain=$new_domain_name
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search=$(printf "$new_domain_search")
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namesrv=$new_domain_name_servers
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hostname=$new_host_name
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[ -f /tmp/net.$netif.override ] && . /tmp/net.$netif.override
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# Taken from debian dhclient-script:
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# The 576 MTU is only used for X.25 and dialup connections
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# where the admin wants low latency. Such a low MTU can cause
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# problems with UDP traffic, among other things. As such,
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# disallow MTUs from 576 and below by default, so that broken
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# MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
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if [ -n "$mtu" ] && [ $mtu -gt 576 ] ; then
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echo "if ! ip link set $netif mtu $mtu ; then"
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echo "ip link set $netif down"
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echo "ip link set $netif mtu $mtu"
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echo "ip link set $netif up"
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echo wait_for_if_up $netif
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echo "fi"
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fi > /tmp/net.$netif.up
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echo ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif >> /tmp/net.$netif.up
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[ -n "$gw" ] && echo ip route add default via $gw dev $netif > /tmp/net.$netif.gw
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[ -n "${search}${domain}" ] && echo "search $search $domain" > /tmp/resolv.conf
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if [ -n "$namesrv" ] ; then
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for s in $namesrv; do
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echo nameserver $s
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done
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fi >> /tmp/resolv.conf
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[ -n "$hostname" ] && echo "echo $hostname > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
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}
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PATH=$PATH:/sbin:/usr/sbin
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. /lib/dracut-lib.sh
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if getarg rdnetdebug ; then
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exec >/tmp/dhclient.$interface.$$.out
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exec 2>>/tmp/dhclient.$interface.$$.out
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set -x
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fi
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# We already need a set netif here
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netif=$interface
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# Huh? Interface configured?
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[ -f "/tmp/net.$netif.up" ] && exit 0
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case $reason in
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PREINIT)
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ip link set $netif up
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wait_for_if_up $netif
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;;
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BOUND)
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if ! arping -q -D -c 2 -I $netif $new_ip_address ; then
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warn "Duplicate address detected for $new_ip_address while doing dhcp. retrying"
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exit 1
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fi
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setup_interface
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set | while read line; do
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[ "${line#new_}" = "$line" ] && continue
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echo "$line"
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done >/tmp/dhclient.$netif.dhcpopts
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echo online > /sys/class/net/$netif/uevent
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/sbin/initqueue --onetime --name netroot-$netif /sbin/netroot $netif
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;;
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*) ;;
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esac
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exit 0
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