1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#!/bin/sh -
#
# $OpenBSD: netstart,v 1.49 1999/08/09 21:49:04 angelos Exp $
# Returns true if $1 contains only alphanumerics
isalphanumeric() {
local _n
_n=$1
while [ ${#_n} != 0 ]; do
case $_n in
[A-Za-z0-9]*) ;;
*) return 1;;
esac
_n=${_n#?}
done
return 0
}
# /etc/myname contains my symbolic name
#
hostname=`cat /etc/myname`
hostname $hostname
if [ -f /etc/defaultdomain ]; then
domainname `cat /etc/defaultdomain`
fi
# pick up option configuration
. /etc/rc.conf
# Configure the IP filter before configuring network interfaces
if [ X"${ipfilter}" = X"YES" -a -f "${ipfilter_rules}" ]; then
echo 'configuring IP filter'
ipf -Fa -f ${ipfilter_rules} -E
else
ipfilter=NO
fi
# set the address for the loopback interface
ifconfig lo0 inet localhost
# use loopback, not the wire
route -n add -host $hostname localhost
route -n add -net 127 127.0.0.1 -reject
# configure all of the non-loopback interfaces which we know about.
# do this by reading /etc/hostname.* files, where * is the name
# of a given interface.
#
# these files are formatted like the following, but with no # at the
# beginning of the line
#
# addr_family hostname netmask broadcast_addr options
# dest dest_addr
#
# OR
#
# dhcp
#
# OR
#
# bridge
# brconfig-arguments [ several lines if needed ]
#
# addr_family is the address family of the interface, generally inet
# hostname is the host name that belongs to the interface, in /etc/hosts.
# netmask is the network mask for the interface.
# broadcast_addr is the broadcast address for the interface
# options are misc. options to ifconfig for the interface.
#
# dest is simply the string "dest" (no quotes, though) if the interface
# has a "destination" (i.e. it's a point-to-point link, like SLIP).
# dest_addr is the hostname of the other end of the link, in /etc/hosts
#
# the only required contents of the file in this mode are the addr_family field
# and the hostname.
#
# dhcp is simply the string "dhcp" (no quotes, though) if the interface
# is to be configured using DHCP. See dhclient(8) and dhclient.conf(5)
# for details.
#
# bridge is the string "bridge" (still no quotes). Bridge interfaces
# are just configured "up" and then brconfig(8) is called for each
# line of arguments following this first line.
for hn in /etc/hostname.*; do
# Strip off /etc/hostname. prefix
if=${hn#/etc/hostname.}
# Interface names must be alphanumeric only. We check to avoid
# configuring backup or temp files, and to catch the "*" case.
if ! isalphanumeric "$if"; then
continue
fi
# If the interface does not exist, just skip processing the file
/sbin/ifconfig $if > /dev/null 2>&1
if [ "$?" != "0" ]; then
continue
fi
# Now parse the hostname.* file
{
read af name mask bcaddr extras
# $af can be either "bridge", "dhcp", "up" or an address family.
case "$af" in
"bridge")
ifconfig $if up
cmd=`sed "s/\(.*\)/brconfig $if \1;/"`
;;
"dhcp")
ifconfig $if $extras down
cmd="/sbin/dhclient $if"
;;
"up")
# The only one of these guaranteed to be set is $if
cmd="ifconfig $if $name $mask $bcaddr $extras up"
;;
*)
read dt dtaddr
if [ ! -n "$name" ]; then
echo "/etc/hostname.$if: invalid network configuration file"
exit
fi
cmd="ifconfig $if $af $name "
if [ "${dt}" = "dest" ]; then cmd="$cmd $dtaddr"; fi
if [ -n "$mask" ]; then cmd="$cmd netmask $mask"; fi
if [ -n "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
cmd="$cmd broadcast $bcaddr";
fi
cmd="$cmd $extras";
;;
esac
eval "$cmd"
} < /etc/hostname.$if
done
# /etc/mygate, if it exists, contains the name of my gateway host
# that name must be in /etc/hosts.
if [ -f /etc/mygate ]; then
route -n add -host default `cat /etc/mygate`
fi
# Multicast routing.
#
# The routing to the 224.0.0.0/4 net is setup according to these rules:
# multicast_host multicast_router route comment
# NO NO -reject no multicast
# NO YES none installed daemon will run
# YES/interface NO -interface YES=def. iface
# Any other combination -reject config error
case "$multicast_host:$multicast_router" in
NO:NO)
route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
NO:YES)
;;
*:NO)
set `if [ $multicast_host = YES ]; then
ed -s '!route -n show' <<EOF
/^default/p
EOF
else
ed -s "!ifconfig $multicast_host" <<EOF
/^ inet /p
EOF
fi`
route -n add -net 224.0.0.0/4 -interface $2;;
*:*)
echo 'config error, multicasting disabled until rc.conf is fixed'
route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;;
esac
# Configure NAT after configuring network interfaces
if [ "${ipnat}" = "YES" -a "${ipfilter}" = "YES" -a -f "${ipnat_rules}" ]; then
echo 'configuring NAT'
ipnat -CF -f ${ipnat_rules}
else
ipnat=NO
fi
|
