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92 lines
3.0 KiB
92 lines
3.0 KiB
#!/bin/sh |
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- |
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# ex: ts=8 sw=4 sts=4 et filetype=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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if ! ip link set $netif mtu $mtu ; then |
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ip link set $netif down |
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ip link set $netif mtu $mtu |
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ip link set $netif up |
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wait_for_if_up $netif |
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fi |
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fi |
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ip addr add $ip${mask:+/$mask} ${bcast:+broadcast $bcast} dev $netif |
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[ -n "$gw" ] && echo ip route add default via $gw dev $netif > /tmp/net.$netif.gw |
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[ -n "${search}${domain}" ] && echo "search $search $domain" > /tmp/net.$netif.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 $s |
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done |
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fi >> /tmp/net.$netif.resolv.conf |
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# Note: hostname can be fqdn OR short hostname, so chop off any |
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# trailing domain name and explicity add any domain if set. |
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[ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname |
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} |
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PATH=/usr/sbin:/usr/bin:/sbin:/bin |
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export PS4="dhclient.$interface.$$ + " |
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exec >>/run/initramfs/loginit.pipe 2>>/run/initramfs/loginit.pipe |
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type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh |
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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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echo "dhcp: PREINIT $netif up" |
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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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echo "dhcp: BOND setting $netif" |
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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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{ |
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echo '. /lib/net-lib.sh' |
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echo "setup_net $netif" |
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echo "source_hook initqueue/online $netif" |
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[ -e /tmp/net.$netif.manualup ] || echo "/sbin/netroot $netif" |
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echo "rm -f $hookdir/initqueue/setup_net_$netif.sh" |
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} > $hookdir/initqueue/setup_net_$netif.sh |
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>/tmp/net.$netif.up |
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;; |
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*) echo "dhcp: $reason";; |
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esac |
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exit 0
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