summaryrefslogtreecommitdiffstats
path: root/etc/rc.network6
blob: d4c5dd278f121e86b866a24979b2f6970790033f (plain)
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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
#! /bin/sh
# $FreeBSD$

# Note that almost all of the user-configurable behavior is not in this
# file, but rather in /etc/defaults/rc.conf.  Please check that file
# first before contemplating any changes here.  If you do need to change
# this file for some reason, we would like to know about it.

# IPv6 startup

network6_pass1() {
	echo -n 'Doing IPv6 network setup:'

	case ${ipv6_gateway_enable} in
	[Yy][Ee][Ss])
		#
		# list of interfaces, and prefix for interfaces
		#
		case ${ipv6_network_interfaces} in
		[Aa][Uu][Tt][Oo])
			ipv6_network_interfaces="`ifconfig -l`"
			;;
		esac
		;;
	*)
		#
		# manual configurations - in case ip6_gateway_enable=NO
		# you can configure only single interface,
		# as specification assumes that
		# autoconfigured host has single interface only.
		#
		case ${ipv6_network_interfaces} in
		[Aa][Uu][Tt][Oo])
			ipv6_network_interfaces="`ifconfig -l \
				| sed -e 's/ .*//'`"
			;;
		esac
		;;
	esac

	# just to make sure
	ifconfig lo0 up

	# disallow "internal" addresses to appear on the wire
	route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject
	route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject

	case ${ipv6_gateway_enable} in
	[Yy][Ee][Ss])
		# act as a router
		sysctl -w net.inet6.ip6.forwarding=1
		sysctl -w net.inet6.ip6.accept_rtadv=0

		# wait for DAD
		for i in $ipv6_network_interfaces; do
			ifconfig $i up
		done
		sleep `sysctl -n net.inet6.ip6.dad_count`
		sleep 1

		# setting up interfaces
		for i in $ipv6_network_interfaces; do
			eval prefix=\$ipv6_prefix_$i
			case ${prefix} in
			'')
				continue;
				;;
			esac
			for j in ${prefix}; do
				case ${prefixcmd_enable} in
				[Yy][Ee][Ss])
					prefix $i $j::
					;;
				*)
					laddr=`ifconfig $i inet6 \
						| grep 'inet6 fe80:' \
						| head -1 | awk '{print $2}'`
					hostid=`echo ${laddr} | sed \
					    -e 's/fe80:[0-9a-fA-F]+::/fe80::/' \
					    -e 's/fe80:://' -e 's/%.*//'`
					address=$j\:${hostid}

					eval hostid_$i=${hostid}
					eval address_$i=${address}

					ifconfig $i inet6 ${address} \
						prefixlen 64 alias
					;;
				esac

				# subnet-router anycast address (rfc2373)
				ifconfig $i inet6 $j:: prefixlen 64 \
					alias anycast
			done

			ifconfig $i inet6
		done

		# again, wait for DAD's completion (for global addrs)
		sleep `sysctl -n net.inet6.ip6.dad_count`
		sleep 1

		# Filter out interfaces on which IPv6 addr init failed.
		ipv6_working_interfaces=""
		for i in ${ipv6_network_interfaces}; do
			laddr=`ifconfig $i inet6 2>/dev/null | \
				grep 'inet6 fe80:' | \
				head -1 | grep -v tentative`
			case ${laddr} in
			'')
				;;
			*)
				ipv6_working_interfaces="$i \
					${ipv6_working_interfaces}"
				;;
			esac
		done
		ipv6_network_interfaces=${ipv6_working_interfaces}

		# gifconfig
		network6_gif_setup

		# 6to4 setup
		network6_stf_setup

		# install the "default interface" to kernel, which will be used
		# as the default route when there's no router.
		network6_default_interface_setup

		# setup static routes
		network6_static_routes_setup

		# ipv6_router
		case ${ipv6_router_enable} in
		[Yy][Ee][Ss])
			if [ -x ${ipv6_router} ]; then
				echo -n " ${ipv6_router}"
				${ipv6_router} ${ipv6_router_flags}
			fi
			;;
		esac

		# rtadvd
		# This should enabled with a great care.
		# You may want to fine-tune /etc/rtadvd.conf.
		#
		# And if you wish your rtadvd to receive and process
		# router renumbering messages, specify your Router Renumbering
		# security policy by -P option.
		#
		# See `man 3 ipsec_set_policy` for IPsec policy specification
		# details.
		# (CAUTION: This enables your routers prefix renumbering
		# from another machine, so if you enable this, do it with
		# enough care.)
		#
		case ${rtadvd_enable} in
		[Yy][Ee][Ss])
			# default
			rtadvd_interfaces=`echo ${ipv6_network_interfaces} | \
				sed -e 's/ stf0//'`
			rtadvd ${rtadvd_interfaces}
			#
			# Enable Router Renumbering, unicast case
			# (use correct src/dst addr)
			# rtadvd -P "in ipsec ah/transport/fec0:0:0:1::1-fec0:0:0:10::1/require" \
			#	${ipv6_network_interfaces}
			# Enable Router Renumbering, multicast case
			# (use correct src addr)
			# rtadvd -P "in ipsec ah/transport/ff05::2-fec0:0:0:10::1/require" \
			#	${ipv6_network_interfaces}
			;;
		esac

		# mroute6d
		case ${mroute6d_enable} in
		[Yy][Ee][Ss])
			if [ -x ${mroute6d_program} ]; then
				echo -n " ${mroute6d_program}"
				${mroute6d_program} ${mroute6d_flags}
			fi
			;;
		esac
		;;
	*)
		# act as endhost - automatically configured
		sysctl -w net.inet6.ip6.forwarding=0
		sysctl -w net.inet6.ip6.accept_rtadv=1

		ifconfig ${ipv6_network_interfaces} up
		rtsol ${ipv6_network_interfaces}



		# wait for DAD's completion (for global addrs)
		sleep `sysctl -n net.inet6.ip6.dad_count`
		sleep 1

		# gifconfig
		network6_gif_setup

		# 6to4 setup
		network6_stf_setup

		# install the "default interface" to kernel, which will be used
		# as the default route when there's no router.
		# ndp -I ${ipv6_default_interface}
		network6_default_interface_setup

		# setup static routes
		network6_static_routes_setup
		;;
	esac

	case ${ipv6_ipv4mapping} in
	[Yy][Ee][Ss])
		echo -n ' IPv4 mapped IPv6 address support=YES'
		sysctl -w net.inet6.ip6.mapped_addr=1 >/dev/null
		;;
	'' | *)
		echo -n ' IPv4 mapped IPv6 address support=NO'
		sysctl -w net.inet6.ip6.mapped_addr=0 >/dev/null
		;;
	esac

	echo '.'

	# Let future generations know we made it.
	#
	network6_pass1_done=YES
}

network6_gif_setup() {
	case ${gif_interfaces} in
	[Nn][Oo] | '')
		;;
	*)
		for i in ${gif_interfaces}; do
			eval peers=\$gifconfig_$i
			case ${peers} in
			'')
				continue
				;;
			*)
				gifconfig $i ${peers}
				;;
			esac
		done
		;;
	esac
}

network6_stf_setup() {
	case ${stf_interface_ipv4addr} in
	[Nn][Oo] | '')
		;;
	*)
		# setup outer IPv4 addrs
		gifconfig stf0 ${stf_interface_ipv4addr} 255.255.255.255
		# assign IPv6 addr and interface route for 6to4 interface
		stf_prefixlen=$((16+${stf_interface_ipv4plen:-0}))
		ipv4_in_hexformat=`echo ${stf_interface_ipv4addr} | \
			sed -e s/"\."/" "/g | \
			awk '{$5 = $1*256 + $2; $6 = $3*256 + $4; \
			printf "%x:%x\n", $5, $6}'`
		case ${stf_interface_ipv6_ifid} in
		[Aa][Uu][Tt][Oo] | '')
			laddr=`ifconfig stf0 inet6 | grep 'inet6 fe80:' \
				| head -1 | awk '{print $2}'`
			stf_interface_ipv6_ifid=`echo ${laddr} | sed \
				-e 's/fe80:[0-9a-fA-F]+::/fe80::/' \
				-e 's/fe80:://' -e 's/%.*//'`
			case ${stf_interface_ipv6_ifid} in
			'')
				stf_interface_ipv6_ifid=0:0:0:1
				;;
			esac
			;;
		esac
		ifconfig stf0 inet6 2002:${ipv4_in_hexformat}:${stf_interface_ipv6_slaid:-0}:${stf_interface_ipv6_ifid} \
			prefixlen ${stf_prefixlen}
		# disallow packets to malicious 6to4 prefix
		route add -inet6 2002:7f00:0000:: -prefixlen 24 ::1 -reject
		route add -inet6 2002:0000:0000:: -prefixlen 48 ::1 -reject
		route add -inet6 2002:ffff:ffff:: -prefixlen 48 ::1 -reject
		;;
	esac
}

network6_static_routes_setup() {
	# Set up any static routes.
	case ${ipv6_static_routes} in
	[Nn][Oo] | '')
		;;
	*)
		for i in ${ipv6_static_routes}; do
			eval ipv6_route_args=\$ipv6_route_${i}
			route add -inet6 ${ipv6_route_args}
		done
		;;
	esac
}

network6_default_interface_setup() {
	# Choose IPv6 default interface if it is not clearly specified.
	case ${ipv6_default_interface} in
	[Nn][Oo] | '')
		for i in ${ipv6_network_interfaces}; do
			laddr=`ifconfig $i inet6 2>/dev/null \
				| grep 'inet6 fe80:' | \
				head -1 | grep -v tentative`
			case ${laddr} in
			'')
				;;
			*)
				ipv6_default_interface=$i
				break
				;;
			esac
		done
		;;
	esac

	# Disallow unicast packets without outgoing scope identifiers,
	# or route such packets to a "default" interface, if it is specified.
	case ${ipv6_default_interface} in
	[Nn][Oo] | '')
		route add -inet6 fe80:: -prefixlen 10 ::1 -reject
		route add -inet6 ff02:: -prefixlen 16 ::1 -reject
		;;
	*)
		laddr=`ifconfig ${ipv6_default_interface} inet6 \
			| grep 'inet6 fe80:' | head -1 | awk '{print $2}'`
		route add -inet6 fe80:: ${laddr} -prefixlen 10 -interface \
			-cloning
		route add -inet6 ff02:: ${laddr} -prefixlen 16 -interface \
			-cloning
		;;
	esac
}
OpenPOWER on IntegriCloud