summaryrefslogtreecommitdiffstats
path: root/etc/network.subr
blob: c4dcb81c04f29b85ebded94b4a32ae19ba2f003b (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
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
#!/bin/sh -
#
# Copyright (c) 1993  The FreeBSD Project
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#	From: @(#)netstart	5.9 (Berkeley) 3/30/91
#

# Note that almost all of the user-configurable behavior is no longer 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.

# First pass startup stuff.
#
network_pass1() {
	echo -n 'Doing initial network setup:'

	# Convert host.conf to nsswitch.conf if necessary
	if [ -f "/etc/host.conf" ]; then
		echo ''
		echo 'Warning: /etc/host.conf is no longer used'
		if [ -f "/etc/nsswitch.conf" ]; then
		    echo '  /etc/nsswitch.conf will be used instead'
		else
		    echo '  /etc/nsswitch.conf will be created for you'
		    convert_host_conf /etc/host.conf /etc/nsswitch.conf
		fi
	fi

	# Set the host name if it is not already set
	#
	if [ -z "`hostname -s`" ]; then
		hostname ${hostname}
		echo -n ' hostname'
	fi

	# Establish ipfilter ruleset as early as possible (best in
	# addition to IPFILTER_DEFAULT_BLOCK in the kernel config file)
	#
	case "${ipfilter_enable}" in
	[Yy][Ee][Ss])
		if [ -r "${ipfilter_rules}" ]; then
			echo -n ' ipfilter';
			${ipfilter_program:-/sbin/ipf -Fa -f} \
			    "${ipfilter_rules}" ${ipfilter_flags}
			case "${ipmon_enable}" in
			[Yy][Ee][Ss])
				echo -n ' ipmon'
				${ipmon_program:-/sbin/ipmon} ${ipmon_flags}
				;;
			esac
			case "${ipnat_enable}" in
			[Yy][Ee][Ss])
				if [ -r "${ipnat_rules}" ]; then
					echo -n ' ipnat';
				eval ${ipnat_program:-/sbin/ipnat -CF -f} \
					"${ipnat_rules}" ${ipnat_flags}
				else
					echo -n ' NO IPNAT RULES'
				fi
				;;
			esac
		else
			ipfilter_enable="NO"
			echo -n ' NO IPF RULES'
		fi
		;;
	esac

	# Set the domainname if we're using NIS
	#
	case ${nisdomainname} in
	[Nn][Oo] | '')
		;;
	*)
		domainname ${nisdomainname}
		echo -n ' domain'
		;;
	esac

	echo '.'

	# Initial ATM interface configuration
	#
	case ${atm_enable} in
	[Yy][Ee][Ss])
		if [ -r /etc/rc.atm ]; then
			. /etc/rc.atm
			atm_pass1
		fi
		;;
	esac

	# Special options for sppp(4) interfaces go here.  These need
	# to go _before_ the general ifconfig section, since in the case
	# of hardwired (no link1 flag) but required authentication, you
	# cannot pass auth parameters down to the already running interface.
	#
	for ifn in ${sppp_interfaces}; do
		eval spppcontrol_args=\$spppconfig_${ifn}
		if [ -n "${spppcontrol_args}" ]; then
			# The auth secrets might contain spaces; in order
			# to retain the quotation, we need to eval them
			# here.
			eval spppcontrol ${ifn} ${spppcontrol_args}
		fi
	done

	# gifconfig
	network_gif_setup

	# Set up all the network interfaces, calling startup scripts if needed
	#
	case ${network_interfaces} in
	[Aa][Uu][Tt][Oo])
		network_interfaces="`ifconfig -l`"
		;;
	esac

	dhcp_interfaces=""
	for ifn in ${network_interfaces}; do
		if [ -r /etc/start_if.${ifn} ]; then
			. /etc/start_if.${ifn}
			eval showstat_$ifn=1
		fi

		# Do the primary ifconfig if specified
		#
		eval ifconfig_args=\$ifconfig_${ifn}

		case ${ifconfig_args} in
		'')
			;;
		[Dd][Hh][Cc][Pp])
			# DHCP inits are done all in one go below
			dhcp_interfaces="$dhcp_interfaces $ifn"
			eval showstat_$ifn=1
			;;
		*)
			ifconfig ${ifn} ${ifconfig_args}
			eval showstat_$ifn=1
			;;
		esac
	done

	if [ ! -z "${dhcp_interfaces}" ]; then
		${dhcp_program:-/sbin/dhclient} ${dhcp_flags} ${dhcp_interfaces}
	fi

	for ifn in ${network_interfaces}; do
		# Check to see if aliases need to be added
		#
		alias=0
		while : ; do
			eval ifconfig_args=\$ifconfig_${ifn}_alias${alias}
			if [ -n "${ifconfig_args}" ]; then
				ifconfig ${ifn} ${ifconfig_args} alias
				eval showstat_$ifn=1
				alias=`expr ${alias} + 1`
			else
				break;
			fi
		done

		# Do ipx address if specified
		#
		eval ifconfig_args=\$ifconfig_${ifn}_ipx
		if [ -n "${ifconfig_args}" ]; then
			ifconfig ${ifn} ${ifconfig_args}
			eval showstat_$ifn=1
		fi
	done

	for ifn in ${network_interfaces}; do
		eval showstat=\$showstat_${ifn}
		if [ ! -z ${showstat} ]; then
			ifconfig ${ifn}
		fi
	done

	# ISDN subsystem startup
	#
	case ${isdn_enable} in
	[Yy][Ee][Ss])
		if [ -r /etc/rc.isdn ]; then
			. /etc/rc.isdn
		fi
		;;
	esac

	# Start user ppp if required.  This must happen before natd.
	#
	case ${ppp_enable} in
	[Yy][Ee][Ss])
		# Establish ppp mode.
		#
		if [ "${ppp_mode}" != "ddial" -a "${ppp_mode}" != "direct" \
			-a "${ppp_mode}" != "dedicated" \
			-a "${ppp_mode}" != "background" ]; then
			ppp_mode="auto"
		fi

		ppp_command="/usr/sbin/ppp -quiet -${ppp_mode}"

		# Switch on NAT mode?
		#
		case ${ppp_nat} in
		[Yy][Ee][Ss])
			ppp_command="${ppp_command} -nat"
			;;
		esac

		ppp_command="${ppp_command} ${ppp_profile}"

		echo -n "Starting ppp as \"${ppp_user}\""
		su -m ${ppp_user} -c "exec ${ppp_command}"
		;;
	esac

	# Initialize IP filtering using ipfw
	#
	if /sbin/ipfw -q flush > /dev/null 2>&1; then
		firewall_in_kernel=1
	else
		firewall_in_kernel=0
	fi

	case ${firewall_enable} in
	[Yy][Ee][Ss])
		if [ "${firewall_in_kernel}" -eq 0 ] && kldload ipfw; then
			firewall_in_kernel=1
			echo 'Kernel firewall module loaded'
		elif [ "${firewall_in_kernel}" -eq 0 ]; then
			echo 'Warning: firewall kernel module failed to load'
		fi
		;;
	esac

	# Load the filters if required
	#
	case ${firewall_in_kernel} in
	1)
		if [ -z "${firewall_script}" ]; then
			firewall_script=/etc/rc.firewall
		fi

		case ${firewall_enable} in
		[Yy][Ee][Ss])
			if [ -r "${firewall_script}" ]; then
				. "${firewall_script}"
				echo -n 'Firewall rules loaded, starting divert daemons:'

				# Network Address Translation daemon
				#
				case ${natd_enable} in
				[Yy][Ee][Ss])
					if [ -n "${natd_interface}" ]; then
						if echo ${natd_interface} | \
							grep -q -E '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$'; then
							natd_ifarg="-a ${natd_interface}"
						else
							natd_ifarg="-n ${natd_interface}"
						fi

						echo -n ' natd'; ${natd_program:-/sbin/natd} ${natd_flags} ${natd_ifarg}
					fi
					;;
				esac

				echo '.'

			elif [ "`ipfw l 65535`" = "65535 deny ip from any to any" ]; then
				echo 'Warning: kernel has firewall functionality,' \
				     'but firewall rules are not enabled.'
				echo '		 All ip services are disabled.'
			fi

			case ${firewall_logging} in
			[Yy][Ee][Ss] | '')
				echo 'Firewall logging=YES'
				sysctl -w net.inet.ip.fw.verbose=1 >/dev/null
				;;
			*)
				;;
			esac

			;;
		esac
		;;
	esac

	# Additional ATM interface configuration
	#
	if [ -n "${atm_pass1_done}" ]; then
		atm_pass2
	fi

	# Configure routing
	#
	case ${defaultrouter} in
	[Nn][Oo] | '')
		;;
	*)
		static_routes="default ${static_routes}"
		route_default="default ${defaultrouter}"
		;;
	esac

	# Set up any static routes.  This should be done before router discovery.
	#
	if [ -n "${static_routes}" ]; then
		for i in ${static_routes}; do
			eval route_args=\$route_${i}
			route add ${route_args}
		done
	fi

	echo -n 'Additional routing options:'
	case ${tcp_extensions} in
	[Yy][Ee][Ss] | '')
		;;
	*)
		echo -n ' tcp extensions=NO'
		sysctl -w net.inet.tcp.rfc1323=0 >/dev/null
		;;
	esac

	case ${icmp_bmcastecho} in
	[Yy][Ee][Ss])
		echo -n ' broadcast ping responses=YES'
		sysctl -w net.inet.icmp.bmcastecho=1 >/dev/null
		;;
	esac

	case ${icmp_drop_redirect} in
	[Yy][Ee][Ss])
		echo -n ' ignore ICMP redirect=YES'
		sysctl -w net.inet.icmp.drop_redirect=1 >/dev/null
		;;
	esac

	case ${icmp_log_redirect} in
	[Yy][Ee][Ss])
		echo -n ' log ICMP redirect=YES'
		sysctl -w net.inet.icmp.log_redirect=1 >/dev/null
		;;
	esac

	case ${gateway_enable} in
	[Yy][Ee][Ss])
		echo -n ' IP gateway=YES'
		sysctl -w net.inet.ip.forwarding=1 >/dev/null
		;;
	esac

	case ${forward_sourceroute} in
	[Yy][Ee][Ss])
		echo -n ' do source routing=YES'
		sysctl -w net.inet.ip.sourceroute=1 >/dev/null
		;;
	esac

	case ${accept_sourceroute} in
	[Yy][Ee][Ss])
		echo -n ' accept source routing=YES'
		sysctl -w net.inet.ip.accept_sourceroute=1 >/dev/null
		;;
	esac

	case ${tcp_keepalive} in
	[Yy][Ee][Ss])
		echo -n ' TCP keepalive=YES'
		sysctl -w net.inet.tcp.always_keepalive=1 >/dev/null
		;;
	esac

	case ${tcp_drop_synfin} in
	[Yy][Ee][Ss])
		echo -n ' drop SYN+FIN packets=YES'
		sysctl -w net.inet.tcp.drop_synfin=1 >/dev/null
		;;
	esac

	case ${ipxgateway_enable} in
	[Yy][Ee][Ss])
		echo -n ' IPX gateway=YES'
		sysctl -w net.ipx.ipx.ipxforwarding=1 >/dev/null
		;;
	esac

	case ${arpproxy_all} in
	[Yy][Ee][Ss])
		echo -n ' ARP proxyall=YES'
		sysctl -w net.link.ether.inet.proxyall=1 >/dev/null
		;;
	esac

	case ${ip_portrange_first} in
	[Nn][Oo] | '')
		;;
	*)
		echo -n " ip_portrange_first=$ip_portrange_first"
		sysctl -w net.inet.ip.portrange.first=$ip_portrange_first >/dev/null
		;;
	esac

	case ${ip_portrange_last} in
	[Nn][Oo] | '')
		;;
	*)
		echo -n " ip_portrange_last=$ip_portrange_last"
		sysctl -w net.inet.ip.portrange.last=$ip_portrange_last >/dev/null
		;;
	esac

	echo '.'

	case ${ipsec_enable} in
	[Yy][Ee][Ss])
		if [ -f ${ipsec_file} ]; then
		    echo ' ipsec: enabled'
		    setkey -f ${ipsec_file}
		else
		    echo ' ipsec: file not found'
		fi
		;;
	esac

	echo -n 'Routing daemons:'
	case ${router_enable} in
	[Yy][Ee][Ss])
		echo -n " ${router}";	${router} ${router_flags}
		;;
	esac

	case ${ipxrouted_enable} in
	[Yy][Ee][Ss])
		echo -n ' IPXrouted'
		IPXrouted ${ipxrouted_flags} > /dev/null 2>&1
		;;
	esac

	case ${mrouted_enable} in
	[Yy][Ee][Ss])
		echo -n ' mrouted';	mrouted ${mrouted_flags}
		;;
	esac

	case ${rarpd_enable} in
	[Yy][Ee][Ss])
		echo -n ' rarpd';	rarpd ${rarpd_flags}
		;;
	esac
	echo '.'

	# Let future generations know we made it.
	#
	network_pass1_done=YES
}

network_pass2() {
	echo -n 'Doing additional network setup:'
	case ${named_enable} in
	[Yy][Ee][Ss])
		echo -n ' named';	${named_program:-named} ${named_flags}
		;;
	esac

	case ${ntpdate_enable} in
	[Yy][Ee][Ss])
		echo -n ' ntpdate'
		${ntpdate_program:-ntpdate} ${ntpdate_flags} >/dev/null 2>&1
		;;
	esac

	case ${xntpd_enable} in
	[Yy][Ee][Ss])
		echo -n ' ntpd';	${xntpd_program:-ntpd} ${xntpd_flags}
		;;
	esac

	case ${timed_enable} in
	[Yy][Ee][Ss])
		echo -n ' timed';	timed ${timed_flags}
		;;
	esac

	case ${portmap_enable} in
	[Yy][Ee][Ss])
		echo -n ' rpcbind';	${portmap_program:-/usr/sbin/rpcbind} \
			${portmap_flags}

		# Start ypserv if we're an NIS server.
		# Run rpc.ypxfrd and rpc.yppasswdd only on the NIS master server.
		#
		case ${nis_server_enable} in
		[Yy][Ee][Ss])
			echo -n ' ypserv'; ypserv ${nis_server_flags}

			case ${nis_ypxfrd_enable} in
			[Yy][Ee][Ss])
				echo -n ' rpc.ypxfrd'
				rpc.ypxfrd ${nis_ypxfrd_flags}
				;;
			esac

			case ${nis_yppasswdd_enable} in
			[Yy][Ee][Ss])
				echo -n ' rpc.yppasswdd'
				rpc.yppasswdd ${nis_yppasswdd_flags}
				;;
			esac
			;;
		esac

		# Start ypbind if we're an NIS client
		#
		case ${nis_client_enable} in
		[Yy][Ee][Ss])
			echo -n ' ypbind'; ypbind ${nis_client_flags}
			case ${nis_ypset_enable} in
			[Yy][Ee][Ss])
				echo -n ' ypset';	ypset ${nis_ypset_flags}
				;;
			esac
			;;
		esac

		# Start keyserv if we are running Secure RPC
		#
		case ${keyserv_enable} in
		[Yy][Ee][Ss])
			echo -n ' keyserv';	keyserv ${keyserv_flags}
			;;
		esac

		# Start ypupdated if we are running Secure RPC
		# and we are NIS master
		#
		case ${rpc_ypupdated_enable} in
		[Yy][Ee][Ss])
			echo -n ' rpc.ypupdated';	rpc.ypupdated
			;;
		esac
		;;
	esac

	# Start ATM daemons
	if [ -n "${atm_pass2_done}" ]; then
		atm_pass3
	fi

	echo '.'
	network_pass2_done=YES
}

network_pass3() {
	echo -n 'Starting final network daemons:'

	case ${portmap_enable} in
	[Yy][Ee][Ss])
		case ${nfs_server_enable} in
		[Yy][Ee][Ss])
			if [ -r /etc/exports ]; then
				echo -n ' mountd'

				case ${weak_mountd_authentication} in
				[Yy][Ee][Ss])
					mountd_flags="${mountd_flags} -n"
					;;
				esac

				mountd ${mountd_flags}

				case ${nfs_reserved_port_only} in
				[Yy][Ee][Ss])
					echo -n ' NFS on reserved port only=YES'
					sysctl -w vfs.nfs.nfs_privport=1 > /dev/null
					;;
				esac

				echo -n ' nfsd';	nfsd ${nfs_server_flags}

				if [ -n "${nfs_bufpackets}" ]; then
					sysctl -w vfs.nfs.bufpackets=${nfs_bufpackets} > /dev/null
				fi

				case ${rpc_lockd_enable} in
				[Yy][Ee][Ss])
					echo -n ' rpc.lockd';	rpc.lockd
					;;
				esac

				case ${rpc_statd_enable} in
				[Yy][Ee][Ss])
					echo -n ' rpc.statd';	rpc.statd
					;;
				esac
			fi
			;;
		*)
			case ${single_mountd_enable} in
			[Yy][Ee][Ss])
				if [ -r /etc/exports ]; then
					echo -n ' mountd'

					case ${weak_mountd_authentication} in
					[Yy][Ee][Ss])
						mountd_flags="-n"
						;;
					esac

					mountd ${mountd_flags}
				fi
				;;
			esac
			;;
		esac

		case ${nfs_client_enable} in
		[Yy][Ee][Ss])
			echo -n ' nfsiod';	nfsiod ${nfs_client_flags}
				if [ -n "${nfs_access_cache}" ]; then
			echo -n " NFS access cache time=${nfs_access_cache}"
			sysctl -w vfs.nfs.access_cache_timeout=${nfs_access_cache} >/dev/null
			fi
			;;
		esac

		# If /var/db/mounttab exists, some nfs-server has not been
		# sucessfully notified about a previous client shutdown.
		# If there is no /var/db/mounttab, we do nothing.
		if [ -f /var/db/mounttab ]; then
			rpc.umntall -k
		fi

		case ${amd_enable} in
		[Yy][Ee][Ss])
			echo -n ' amd'
			case ${amd_map_program} in
			[Nn][Oo] | '')
				;;
			*)
				amd_flags="${amd_flags} `eval\
					${amd_map_program}`"
				;;
		esac

			if [ -n "${amd_flags}" ]; then
				amd -p ${amd_flags}\
					> /var/run/amd.pid 2> /dev/null
			else
				amd 2> /dev/null
			fi
			;;
		esac
		;;
	esac

	case ${rwhod_enable} in
	[Yy][Ee][Ss])
		echo -n ' rwhod';	rwhod ${rwhod_flags}
		;;
	esac

	# Kerberos runs ONLY on the Kerberos server machine
	case ${kerberos_server_enable} in
	[Yy][Ee][Ss])
		case ${kerberos_stash} in
		[Yy][Ee][Ss])
			stash_flag=-n
			;;
		*)
			stash_flag=
			;;
		esac

		echo -n ' kerberos'
		kerberos ${stash_flag} >> /var/log/kerberos.log &

		case ${kadmind_server_enable} in
		[Yy][Ee][Ss])
			echo -n ' kadmind'
			(sleep 20; kadmind ${stash_flag} >/dev/null 2>&1 &) &
			;;
		esac
		unset stash_flag
		;;
	esac

	case ${pppoed_enable} in
	[Yy][Ee][Ss])
		if [ -n "${pppoed_provider}" ]; then
			pppoed_flags="${pppoed_flags} -p ${pppoed_provider}"
		fi
		echo -n ' pppoed';
		/usr/libexec/pppoed ${pppoed_flags} ${pppoed_interface}
		;;
	esac

	case ${sshd_enable} in
	[Yy][Ee][Ss])
		if [ ! -f /etc/ssh/ssh_host_key ]; then
			echo ' creating ssh RSA host key';
			/usr/bin/ssh-keygen -N "" -f /etc/ssh/ssh_host_key
		fi
		if [ ! -f /etc/ssh/ssh_host_dsa_key ]; then
			echo ' creating ssh DSA host key';
			/usr/bin/ssh-keygen -d -N "" -f /etc/ssh/ssh_host_dsa_key
		fi
		;;
	esac

	echo '.'
	network_pass3_done=YES
}

network_pass4() {
	echo -n 'Additional TCP options:'
	case ${log_in_vain} in
	[Nn][Oo] | '')
		;;
	*)
		echo -n ' log_in_vain=YES'
		sysctl -w net.inet.tcp.log_in_vain=1 >/dev/null
		sysctl -w net.inet.udp.log_in_vain=1 >/dev/null
		;;
	esac

	echo '.'
	network_pass4_done=YES
}

network_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
}

convert_host_conf() {
    host_conf=$1; shift;
    nsswitch_conf=$1; shift;
    awk '                                                                   \
        /^[:blank:]*#/       { next }                                       \
        /(hosts|local|file)/ { nsswitch[c] = "files"; c++; next }           \
        /(dns|bind)/         { nsswitch[c] = "dns";   c++; next }           \
        /nis/                { nsswitch[c] = "nis";   c++; next }           \
        { printf "Warning: unrecognized line [%s]", $0 > "/dev/stderr" }    \
        END {                                                               \
                printf "hosts: ";                                           \
                for (i in nsswitch) printf "%s ", nsswitch[i];              \
                printf "\n";                                                \
        }' < $host_conf > $nsswitch_conf
}

OpenPOWER on IntegriCloud