network revision 1.11.4.1
1#!/bin/sh 2# 3# $NetBSD: network,v 1.11.4.1 2000/06/20 17:53:32 itojun Exp $ 4# 5 6# PROVIDE: network 7# REQUIRE: root mountcritlocal tty sysctl 8 9. /etc/rc.subr 10 11name="network" 12start_cmd="network_start" 13stop_cmd=":" 14 15network_start() 16{ 17 # set hostname, turn on network 18 # 19 echo "Starting network." 20 21 # If $hostname is set, use it for my Internet name, 22 # otherwise use /etc/myname 23 # 24 if [ -z "$hostname" -a -f /etc/myname ]; then 25 hostname=`cat /etc/myname` 26 fi 27 if [ -n "$hostname" ]; then 28 echo "Hostname: $hostname" 29 hostname $hostname 30 else 31 # Don't warn about it if we're going to run 32 # DHCP later, as we will probably get the 33 # hostname at that time. 34 # 35 if ! checkyesno dhclient; then 36 warn "\$hostname not set." 37 fi 38 fi 39 40 # Check $domainname first, then /etc/defaultdomain, 41 # for NIS/YP domain name 42 # 43 if [ -z "$domainname" -a -f /etc/defaultdomain ]; then 44 domainname=`cat /etc/defaultdomain` 45 fi 46 if [ -n "$domainname" ]; then 47 echo "NIS domainname: $domainname" 48 domainname $domainname 49 fi 50 51 # Flush all routes just to make sure it is clean 52 if checkyesno flushroutes; then 53 route -n flush 54 fi 55 56 # Set the address for the first loopback interface, so that the 57 # auto-route from a newly configured interface's address to lo0 58 # works correctly. 59 # 60 # NOTE: obscure networking problems may occur if lo0 isn't configured... 61 # 62 ifconfig lo0 inet 127.0.0.1 63 64 # According to RFC1122, 127.0.0.0/8 should not leave the node. 65 # 66 route add -inet 127.0.0.0 -netmask 0xff000000 127.0.0.1 -reject 67 68 # Configure all of the network interfaces listed in $net_interfaces; 69 # if $auto_ifconfig is YES, grab all interfaces from ifconfig. 70 # In the following, "xxN" stands in for interface names, like "le0". 71 # For any interfaces that has an $ifconfig_xxN variable associated, 72 # we do "ifconfig xxN $ifconfig_xxN". 73 # If there is no such variable, we take the contents of the file 74 # /etc/ifconfig.xxN, and run "ifconfig xxN" repeatedly, using each 75 # line of the file as the arguments for a seperate "ifconfig" 76 # invocation. 77 # 78 # In order to configure an interface reasonably, you at the very least 79 # need to specify "[addr_family] [hostname]" (e.g "inet my.domain.org"), 80 # and probably a netmask (as in "netmask 0xffffffe0"). You will 81 # frequently need to specify a media type, as in "media UTP", for 82 # interface cards with multiple media connections that do not 83 # autoconfigure. See the ifconfig manual page for details. 84 # 85 # Note that /etc/ifconfig.xxN takes multiple lines. The following 86 # configuration is possible: 87 # inet 10.1.1.1 netmask 0xffffff00 88 # inet 10.1.1.2 netmask 0xffffff00 alias 89 # inet6 fec0::1 prefixlen 64 alias 90 # 91 if [ "$net_interfaces" != NO ]; then 92 if checkyesno auto_ifconfig; then 93 tmp="`ifconfig -l`" 94 else 95 tmp="$net_interfaces" 96 fi 97 echo -n 'Configuring network interfaces:' 98 for int in $tmp; do 99 eval `echo 'args=$ifconfig_'$int` 100 if [ -n "$args" ]; then 101 echo -n " $int" 102 ifconfig $int $args 103 elif [ -f /etc/ifconfig.$int ]; then 104 echo -n " $int" 105 (while read args; do 106 if [ -n "`eval echo '$args'`" ] ; then 107 ifconfig $int $args 108 fi 109 done) < /etc/ifconfig.$int 110 else 111 if ! checkyesno auto_ifconfig; then 112 echo 113 warn \ 114 "/etc/ifconfig.$int missing and ifconfig_$int not set;" 115 warn "interface $int not configured." 116 fi 117 continue 118 fi 119 configured_interfaces="$configured_interfaces $int" 120 done 121 echo "." 122 fi 123 124 # Check $defaultroute, then /etc/mygate, for the name of my gateway 125 # host. That name must be in /etc/hosts. 126 # 127 if [ -z "$defaultroute" -a -f /etc/mygate ]; then 128 defaultroute=`cat /etc/mygate` 129 fi 130 if [ -n "$defaultroute" ]; then 131 route add default $defaultroute 132 fi 133 134 # Check if each configured interface xxN has an $ifaliases_xxN variable 135 # associated, then configure additional IP addresses for that interface. 136 # The variable contains a list of "address netmask" pairs, with 137 # "netmask" set to "-" if the interface default netmask is to be used. 138 # 139 # Note that $ifaliases_xxN works only with certain configurations and 140 # considered not recommended. Use /etc/ifconfig.xxN if possible. 141 # 142 # 143 if [ -n "$configured_interfaces" ]; then 144 echo "Adding interface aliases:" 145 done_aliases_message=yes 146 fi 147 for int in $configured_interfaces; do 148 eval `echo 'args=$ifaliases_'$int` 149 if [ -n "$args" ]; then 150 set -- $args 151 while [ $# -ge 2 ]; do 152 addr=$1 ; net=$2 ; shift 2 153 if [ "$net" = "-" ]; then 154 ifconfig $int inet alias $addr 155 else 156 ifconfig $int inet alias $addr \ 157 netmask $net 158 fi 159 # Use loopback, not the wire 160 route add $addr 127.0.0.1 161 done 162 fi 163 done 164 165 # /etc/ifaliases, if it exists, contains the names of additional IP 166 # addresses for each interface. It is formatted as a series of lines 167 # that contain 168 # address interface netmask 169 # 170 # Note that /etc/ifaliases works only with certain cases only and its 171 # use is not recommended. Use /etc/ifconfig.xxN instead. 172 # 173 # 174 if [ -f /etc/ifaliases ]; then 175 ( 176 if [ "$done_aliases_message" != yes ]; then 177 echo "Adding interface aliases:" 178 fi 179 while read addr int net; do 180 if [ -z "$net" ]; then 181 ifconfig $int inet alias $addr 182 else 183 ifconfig $int inet alias $addr netmask $net 184 fi 185 # use loopback, not the wire 186 route add $addr 127.0.0.1 187 done 188 ) < /etc/ifaliases 189 fi 190 191 # IPv6 192 # Note that manual configuration can be done in the above, using 193 # ifconfig. 194 # 195 if ifconfig lo0 inet6 >/dev/null 2>&1; then 196 # We have IPv6 support in kernel. 197 198 # disallow link-local unicast dest without outgoing scope 199 # identifiers. 200 # 201 route add -inet6 fe80:: -prefixlen 10 ::1 -reject 202 203 # disallow site-local unicast dest without outgoing scope 204 # identifiers. 205 # If you configure site-locals without scope id (it is 206 # permissible config for routers that are not on scope 207 # boundary), you may want to comment the following one out. 208 # 209 route add -inet6 fec0:: -prefixlen 10 ::1 -reject 210 211 # disallow "internal" addresses to appear on the wire. 212 # 213 route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject 214 215 # disallow packets to malicious IPv4 compatible prefix 216 # 217 route add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject 218 route add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject 219 route add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject 220 route add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject 221 222 # disallow packets to malicious 6to4 prefix 223 # 224 route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject 225 route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject 226 route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject 227 route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject 228 229 # Completely disallow packets to IPv4 compatible prefix. 230 # This may conflict with RFC1933 under following circumstances: 231 # (1) An IPv6-only KAME node tries to originate packets to IPv4 232 # comatible destination. The KAME node has no IPv4 233 # compatible support. Under RFC1933, it should transmit 234 # native IPv6 packets toward IPv4 compatible destination, 235 # hoping it would reach a router that forwards the packet 236 # toward auto-tunnel interface. 237 # (2) An IPv6-only node originates a packet to IPv4 compatible 238 # destination. A KAME node is acting as an IPv6 router, and 239 # asked to forward it. 240 # Due to rare use of IPv4 compatible address, and security 241 # issues with it, we disable it by default. 242 # 243 route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject 244 245 sysctl -w net.inet6.ip6.forwarding=0 >/dev/null 246 sysctl -w net.inet6.ip6.accept_rtadv=0 >/dev/null 247 248 # backward compatibility 249 # 250 if [ -z "$ip6mode" -a -n "$ip6forwarding" ]; then 251 warn 'Please migrate to newer rc.conf' \ 252 '(use ip6mode, not ip6forwarding)' 253 if checkyesno ip6forwarding; then 254 ip6mode=router 255 else 256 if checkyesno rtsol; then 257 ip6mode=autohost 258 else 259 ip6mode=host 260 fi 261 fi 262 fi 263 264 case $ip6mode in 265 router) 266 echo 'IPv6 mode: router' 267 sysctl -w net.inet6.ip6.forwarding=1 >/dev/null 268 ;; 269 270 autohost) 271 echo 'IPv6 mode: autoconfigured host' 272 sysctl -w net.inet6.ip6.accept_rtadv=1 >/dev/null 273 ;; 274 275 host) 276 echo 'IPv6 mode: host' 277 ;; 278 279 *) echo 'WARNING: invalid value in ip6mode' 280 ;; 281 282 esac 283 284 if checkyesno rtsol; then 285 if [ "$ip6mode" = "autohost" ]; then 286 echo 'Sending router solicitation...' 287 rtsol $rtsol_flags 288 else 289 echo 290 warn \ 291 "ip6mode must be set to 'autohost' to use rtsol." 292 fi 293 fi 294 295 # wait till DAD is completed. always invoke it in case if are 296 # configured manually by ifconfig 297 # 298 dadcount=`sysctl -n net.inet6.ip6.dad_count 2>/dev/null` 299 sleep $dadcount 300 sleep 1 301 fi 302 303 # XXX this must die 304 if [ -s /etc/netstart.local ]; then 305 sh /etc/netstart.local start 306 fi 307} 308 309network_stop() 310{ 311 echo "Stopping network." 312 313 # XXX this must die 314 if [ -s /etc/netstart.local ]; then 315 sh /etc/netstart.local stop 316 fi 317 318 echo "Deleting aliases." 319 if [ -f /etc/ifaliases ]; then 320 ( 321 while read addr int net; do 322 ifconfig $int inet delete $addr 323 done 324 ) < /etc/ifaliases 325 fi 326 327 for int in $configured_interfaces; do 328 eval `echo 'args=$ifaliases_'$int` 329 if [ -n "$args" ]; then 330 set -- $args 331 while [ $# -ge 2 ]; do 332 addr=$1 ; net=$2 ; shift 2 333 ifconfig $int inet delete $addr 334 done 335 fi 336 done 337 338 # down interfaces 339 # 340 echo -n 'Downing network interfaces:' 341 if [ "$net_interfaces" != NO ]; then 342 if checkyesno auto_ifconfig; then 343 tmp="`ifconfig -l`" 344 else 345 tmp="$net_interfaces" 346 fi 347 for int in $tmp; do 348 eval `echo 'args=$ifconfig_'$int` 349 if [ -n "$args" ] || [ -f /etc/ifconfig.$int ]; then 350 echo -n " $int" 351 ifconfig $int down 352 fi 353 done 354 echo "." 355 fi 356 357 # flush routes 358 # 359 route -n flush 360 361} 362 363load_rc_config $name 364run_rc_command "$1" 365