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1#!/bin/sh
2
3# udhcpc script edited by Tim Riker <Tim@Rikers.org>
4
5[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
6
7RESOLV_CONF="/etc/resolv.conf"
8[ -n "$broadcast" ] && BROADCAST="broadcast $broadcast"
9[ -n "$subnet" ] && NETMASK="netmask $subnet"
10
11# return 0 if root is mounted on a network filesystem
12root_is_nfs() {
13 grep -qe '^/dev/root.*\(nfs\|smbfs\|ncp\|coda\) .*' /proc/mounts
14}
15
16have_bin_ip=0
17if [ -x /bin/ip ]; then
18 have_bin_ip=1
19fi
20
21case "$1" in
22 deconfig)
23 if ! root_is_nfs ; then
24 if [ $have_bin_ip -eq 1 ]; then
25 ip addr flush dev $interface
26 ip link set dev $interface up
27 else
28 /sbin/ifconfig $interface 0.0.0.0
29 fi
30 fi
31 ;;
32
33 renew|bound)
34 if [ $have_bin_ip -eq 1 ]; then
35 ip addr add dev $interface local $ip/$mask $BROADCAST
36 else
37 /sbin/ifconfig $interface $ip $BROADCAST $NETMASK
38 fi
39
40 if [ -n "$router" ] ; then
41 if ! root_is_nfs ; then
42 if [ $have_bin_ip -eq 1 ]; then
43 while ip route del default 2>/dev/null ; do
44 :
45 done
46 else
47 while route del default gw 0.0.0.0 dev $interface 2>/dev/null ; do
48 :
49 done
50 fi
51 fi
52
53 metric=0
54 for i in $router ; do
55 if [ $have_bin_ip -eq 1 ]; then
56 ip route add default via $i metric $((metric++))
57 else
58 route add default gw $i dev $interface metric $((metric++)) 2>/dev/null
59 fi
60 done
61 fi
62
63 echo -n > $RESOLV_CONF
64 [ -n "$domain" ] && echo search $domain >> $RESOLV_CONF
65 for i in $dns ; do
66 echo adding dns $i
67 echo nameserver $i >> $RESOLV_CONF
68 done
69 ;;
70esac
71
72exit 0