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
|
.\" $KAME: dhcp6c.conf.5,v 1.30 2005/05/03 06:54:26 jinmei Exp $
.\"
.\" Copyright (C) 2002 WIDE 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.
.\" 3. Neither the name of the project nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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.
.\"
.Dd July 29, 2004
.Dt DHCP6C.CONF 5
.Os KAME
.\"
.Sh NAME
.Nm dhcp6c.conf
.Nd DHCPv6 client configuration file
.\"
.Sh SYNOPSIS
.Pa /usr/local/etc/dhcp6c.conf
.\"
.Sh DESCRIPTION
The
.Nm
file contains configuration information for KAME's DHCPv6 client,
.Nm dhcp6c .
The configuration file consists of a sequence of statements terminated
by a semi-colon (`;').
Statements are composed of tokens separated by white space,
which can be any combination of blanks,
tabs and newlines.
In some cases a set of statements is combined with a pair of brackets,
which is regarded as a single token.
Lines beginning with
.Ql #
are comments.
.Sh Interface specification
There are some statements that may or have to specify interface.
Interfaces are specified in the form of "name unit", such as
.Ar fxp0
and
.Ar gif1.
.\"
.Sh DHCPv6 options
Some configuration statements take the description of a DHCPv6 option
as an argument.
The followings are the format and description of available DHCPv6
options.
.Bl -tag -width Ds -compact
.It Xo
.Ic domain-name-servers
.Xc
means a Domain Name Server option.
.It Xo
.Ic domain-name
.Xc
means a domain name option.
.It Xo
.Ic ntp-servers
.Xc
means an NTP server option.
As of this writing, the option type for this option is not officially
assigned.
.Nm dhcp6c
will reject this option unless it is explicitly built to accept the option.
.It Xo
.Ic sip-server-address
.Xc
means a SIP Server address option.
.It Xo
.Ic sip-server-domain-name
.Xc
means a SIP server domain name option.
.It Xo
.Ic nis-server-address
.Xc
means a NIS Server address option.
.It Xo
.Ic nis-domain-name
.Xc
means a NIS domain name option.
.It Xo
.Ic nisp-server-address
.Xc
means a NIS+ Server address option.
.It Xo
.Ic nisp-domain-name
.Xc
means a NIS+ domain name option.
.It Xo
.Ic bcmcs-server-address
.Xc
means a BCMCS Server address option.
.It Xo
.Ic bcmcs-server-domain-name
.Xc
means a BCMCS server domain name option.
.It Ic ia-pd Ar ID
means an IA_PD
.Pq Identity Association for Prefix Delegation
option.
.Ar ID
is a decimal number of the IAID
.Pq see below about identity associations .
.It Ic ia-na Ar ID
means an IA_PD
.Pq Identity Association for Non-temporary Addresses
option.
.Ar ID
is a decimal number of the IAID
.Pq see below about identity associations .
.It Ic rapid-commit
means a rapid-commit option.
.It Ic authentication Ar authname
means an authentication option.
.Ar authname
is a string specifying parameters of the authentication protocol.
An
.Ic authentication
statement for
.Ar authname
must be provided.
.El
.\"
.Sh Interface statement
An interface statement specifies configuration parameters on the
interface.
The generic format of an interface statement is as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic interface Ar interface
{
.Ar substatements
};
.Xc
The followings are possible
.Ar substatements
in an interface statement.
.Bl -tag -width Ds -compact
.It Xo
.Ic send Ar send-options
;
.Xc
This statement specifies DHCPv6 options to be sent to the server(s).
Some options can only appear in particular messages according to the
specification,
in which case the appearance of the options is limited to be compliant
with the specification.
.Pp
.Ar send-options
is a comma-separated list of options,
each of which should be specified as described above.
Multiple
.Ic send
statements can also be specified,
in which case all the specified options will be sent.
.Pp
When
.Ic rapid-commit
is specified,
.Nm dhcp6c
will include a rapid-commit option in solicit messages and wait for
an immediate reply instead of advertisements.
.Pp
When
.Ic ia-pd
is specified,
.Nm dhcp6c
will initiate prefix delegation as a requesting router by
including an IA_PD option with the specified
.Ar ID
in solicit messages.
.Pp
When
.Ic ia-na
is specified,
.Nm dhcp6c
will initiate stateful address assignment by
including an IA_NA option with the specified
.Ar ID
in solicit messages.
.Pp
In either case, a corresponding identity association statement
must exist with the same
.Ar ID .
.It Ic request Ar request-options ;
This statement specifies DHCPv6 options to be included in an
option-request option.
.Ar request-options
is a comma-separated list of options,
which can consist of the following options.
.Bl -tag -width Ds -compact
.It Xo
.Ic domain-name-servers
.Xc
requests a list of Domain Name Server addresses.
.It Xo
.Ic domain-name
.Xc
requests a DNS search path.
.It Xo
.Ic ntp-servers
.Xc
requests a list of NTP server addresses.
As of this writing, the option type for this option is not officially
assigned.
.Nm dhcp6c
will reject this option unless it is explicitly built to accept the option.
.It Xo
.Ic sip-server-address
.Xc
requests a list of SIP server addresses.
.It Xo
.Ic sip-domain-name
.Xc
requests a SIP server domain name.
.It Xo
.Ic nis-server-address
.Xc
requests a list of NIS server addresses.
.It Xo
.Ic nis-domain-name
.Xc
requests a NIS domain name.
.It Xo
.Ic nisp-server-address
.Xc
requests a list of NIS+ server addresses.
.It Xo
.Ic nisp-domain-name
.Xc
requests a NIS+ domain name.
.It Xo
.Ic bcmcs-server-address
.Xc
requests a list of BCMCS server addresses.
.It Xo
.Ic bcmcs-domain-name
.Xc
requests a BCMCS domain name.
.It Xo
.Ic refreshtime
.Xc
means an information refresh time option.
This can only be specified when sent with information-request
messages;
.Nm dhcp6c
will ignore this option for other messages.
.El
Multiple
.Ic request
statements can also be specified,
in which case all the specified options will be requested.
.It Ic information-only ;
This statement specifies
.Nm dhcp6c
to only exchange informational configuration parameters with servers.
A list of DNS server addresses is an example of such parameters.
This statement is useful when the client does not need stateful
configuration parameters such as IPv6 addresses or prefixes.
.It Ic script Ar \(dqscript-name\(dq ;
This statement specifies a path to script invoked by
.Nm dhcp6c
on a certain condition including when the daemon receives a reply
message.
.Ar script-name
must be the absolute path from root to the script file, be a regular
file, and be created by the same owner who runs the daemon.
.El
.El
.\"
.Sh Identity association statement
Identity association
.Pq IA
is a key notion of DHCPv6.
An IA is uniquely identified in a client by a pair of IA type and
IA identifier
.Pq IAID .
An IA is associated with configuration information dependent on the IA type.
.Pp
An identity association statement defines a single IA with some
client-side configuration parameters.
Its format is as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic id-assoc Ar type Op Ar ID
{
.Ar substatements
};
.Xc
.Ar type
is a string for the type of this IA.
The current implementation supports
.Ql Ic na
(non-temporary address allocation)
.Ql Ic pd
(prefix delegation) for the IA type.
.Ar ID
is a decimal number of IAID.
If omitted, the value 0 will be used by default.
.Ar substatements
is a sequence of statements that specifies configuration parameters
for this IA.
Each statement may or may not be specific to the type of IA.
.Pp
The followings are possible
.Ar substatements
for an IA of type
.Ic na .
.Bl -tag -width Ds -compact
.It Xo
.Ic address Ar ipv6-address pltime Op Ar vltime ;
.Xc
specifies an address and related parameters that the client wants to be
allocated.
Multiple addresses can be specified, each of which is described as a
separate
.Ic address
substatement.
.Nm dhcp6c
will include all the addresses
.Pq and related parameters
in Solicit messages,
as an IA_NA prefix option encapsulated in the corresponding IA_NA
option.
Note, however, that the server may or may not respect the specified
prefix parameters.
For parameters of the
.Ic address
substatement,
see
.Xr dhcp6s.conf 5 .
.El
.Pp
The followings are possible
.Ar substatements
for an IA of type
.Ic pd .
.Bl -tag -width Ds -compact
.It Xo
.Ar prefix_interface_statement
.Xc
specifies the client's local configuration of how delegated prefixes
should be used
.Pq see below .
.It Ic prefix Ar ipv6-prefix pltime Op Ar vltime ;
specifies a prefix and related parameters that the client wants to be
delegated.
Multiple prefixes can be specified, each of which is described as a
separate
.Ic prefix
substatement.
.Nm dhcp6c
will include all the prefixes
.Pq and related parameters
in Solicit messages,
as an IA_PD prefix option encapsulated in the corresponding IA_PD
option.
Note, however, that the server may or may not respect the specified
prefix parameters.
For parameters of the
.Ic prefix
substatement,
see
.Xr dhcp6s.conf 5 .
.El
.El
.\"
.Sh Prefix interface statement
A prefix interface statement specifies configuration parameters of
prefixes on local interfaces that are derived from delegated prefixes.
A prefix interface statement can only appear as a substatement of
an identity association statement with the type
.Ic pd .
The generic format of an interface statement is as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic prefix-interface Ar interface
{
.Ar substatements
};
.Xc
When an IPv6 prefix is delegated from a DHCPv6 server,
.Nm dhcp6c
will assign a prefix on the
.Ar interface
unless the interface receives the DHCPv6 message that contains the prefix
with the delegated prefix and the parameters provided in
.Ar substatements .
Possible substatements are as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic sla-id Ar ID
;
.Xc
This statement specifies the identifier value of the site-level aggregator
.Pq SLA
on the interface.
.Ar ID
must be a decimal integer which fits in the length of SLA IDs
.Pq see below .
For example,
if
.Ar ID
is 1 and the client is delegated an IPv6 prefix 2001:db8:ffff::/48,
.Nm dhcp6c
will combine the two values into a single IPv6 prefix,
2001:db8:ffff:1::/64,
and will configure the prefix on the specified
.Ar interface .
.It Xo
.Ic sla-len Ar length
;
.Xc
This statement specifies the length of the SLA ID in bits.
.Ar length
must be a decimal number between 0 and 128.
If the length is not specified by this statement,
the default value 16 will be used.
.El
.El
.\"
.Sh Authentication statement
An authentication statement defines a set of authentication parameters
used in DHCPv6 exchanges with the server(s).
The format of an authentication statement is as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic authentication Ar authname
{
.Ar substatements
};
.Xc
.Ar authname
is a string which is unique among all authentication statements in the
configuration file.
It will specify a particular set of authentication parameters when
.Ic authentication
option is specified in the
.Ic interface
statement.
Possible substatements of the
.Ic authentication
statement are as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic protocol Ar authprotocol
;
.Xc
specifies the authentication protocol.
Currently, the only available protocol as
.Ar authprotocol
is
.Ic delayed ,
which means the DHCPv6 delayed authentication protocol.
.It Xo
.Ic algorithm Ar authalgorithm
;
.Xc
specifies the algorithm for this authentication.
Currently, the only available algorithm is HMAC-MD5,
which can be specified as one of the followings:
.Ic hmac-md5 ,
.Ic HMAC-MD5 ,
.Ic hmacmd5 ,
or
.Ic HMACMD5 .
This substatement can be omitted.
In this case,
HMAC-MD5 will be used as the algorithm.
.It Xo
.Ic rdm Ar replay-detection-method
;
.Xc
specifies the replay protection method for this authentication.
Currently, the only available method is
.Ic monocounter ,
which means the use of a monotonically increasing counter.
If this method is specified,
.Ic dhcp6c
will use an NTP-format timestamp when it authenticates the message.
This substatement can be omitted,
in which case
.Ic monocounter
will be used as the method.
.El
.El
.\"
.Sh Keyinfo statement
A keyinfo statement defines a secret key shared with the server(s)
to authenticate DHCPv6 messages.
The format of a keyinfo statement is as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic keyinfo Ar keyname
{
.Ar substatements
};
.Xc
.Ar keyname
is an arbitrary string.
It does not affect client's behavior but is provided for readability
of log messages.
Possible substatements of the
.Ic keyinfo
statement are as follows:
.Bl -tag -width Ds -compact
.It Xo
.Ic realm Ar \(dqrealmname\(dq
;
.Xc
specifies the DHCP realm.
.Ar realmname
is an arbitrary string,
but is typically expected to be a domain name like \(dqkame.net\(dq .
.It Xo
.Ic keyid Ar ID
;
.Xc
specifies the key identifier,
.Ar ID ,
as a decimal number.
A secret key is uniquely identified within the client by the DHCP
realm and the key identifier.
.It Xo
.Ic secret Ar \(dqsecret-value\(dq
;
.Xc
specifies the shared secret of this key.
.Ar \(dqsecret-value\(dq
is a base-64 encoded string of the secret.
.It Xo
.Ic expire Ar \(dqexpiration-time\(dq
;
.Xc
specifies the expiration time of this key.
.Ar \(dqexpiration-time\(dq
should be formatted in one of the followings:
.Ar yyyy-mm-dd HH:MM ,
.Ar mm-dd HH:MM ,
or
.Ar HH:MM ,
where
.Ar yyyy
is the year with century (e.g., 2004),
.Ar mm
is the month,
.Ar dd
is the day of the month,
.Ar HH
is the hour of 24-hour clock,
and
.Ar MM
is the minute,
each of which is given as a decimal number.
Additionally,
a special keyword
.Ic forever
can be specified as
.Ar expiration-time ,
which means the key has an infinite lifetime and never expires.
This substatement can be omitted,
in which case
.Ic forever
will be used by default.
.El
.El
.\"
.Sh Examples
The followings are a sample configuration to be delegated an IPv6
prefix from an upstream service provider.
With this configuration
.Nm dhcp6c
will send solicit messages containing an IA_PD option,
with an IAID 0,
on to an upstream PPP link,
.Ar ppp0 .
After receiving some prefixes from a server,
.Nm dhcp6c
will then configure derived IPv6 prefixes with the SLA ID 1 on a
local ethernet interface,
.Ar ne0 .
Note that the IAID for the
.Ic id-assoc
statement is 0 according to the default.
.Bd -literal -offset
interface ppp0 {
send ia-pd 0;
};
id-assoc pd {
prefix-interface ne0 {
sla-id 1;
};
};
.Ed
.Pp
If a shared secret should be configured in both the client and the
server for DHCPv6 authentication,
it would be specified in the configuration file as follows:
.Bd -literal -offset
keyinfo kame-key {
realm "kame.net";
keyid 1;
secret "5pvW2g48OHPvkYMJSw0vZA==";
};
.Ed
.Pp
One easy way of generating a new secret in the base64 format is to
execute the
.Xr openssl 1
command (when available) as follows,
.Bd -literal -offset
% openssl rand -base64 16
.Ed
.Pp
and copy the output to the
.Nm dhcp6c.conf
file.
.Pp
To include an authentication option for DHCPv6 authentication,
the
.Ic interface
statement should be modified and an
.Ic authentication
statement should be added as follows:
.Bd -literal -offset
interface ppp0 {
send ia-pd 0;
send authentication kame;
};
authentication kame {
protocol delayed;
};
.Ed
.Pp
.Bd -literal -offset
interface fxp0 {
send ia-na 0;
};
.Ed
.Sh SEE ALSO
.Xr dhcp6s.conf 5
.Xr dhcp6c 8
.\"
.Sh HISTORY
The
.Nm
configuration file first appeared in the WIDE/KAME IPv6 protocol
stack kit.
|