CHANGES 44.9 KB
Newer Older
1
2
3
 356.	[cleanup]	isc_task_send no longer requires event->sender to
			be non-null.

4
5
 355.	[func]		Added isc_dir_createunique(), similar to mkdtemp().

6
7
8
 354.	[doc]		Man pages for the dnssec tools are now included in
			the distribution, in doc/man/dnssec.

Andreas Gustafsson's avatar
Andreas Gustafsson committed
9
 353.	[bug]		double increment in lwres/gethost.c:copytobuf().
10
			(RT# 187)
11

12
13
14
 352.	[bug]		Race condition in dns_client_t startup could cause
			an assertion failure.

15
16
17
 351.	[bug]		Constructing a response with rcode SERVFAIL to a TSIG
			signed query could crash the server.

18
19
20
21
 350.	[bug]		Also-notify lists specified in the global options
			block were not correctly reference counted, causing
			a memory leak.

22
 349.	[bug]		Processing a query with the CD bit set now works
23
24
			as expected.

25
26
27
28
 348.	[func]		New named.conf boolean values 'glue-from-auth' and
			'glue-from-cache' now supported in view and global
			options statement.

29
30
31
 347.	[bug]		Don't crash if when an argument is left off
			options in dig.

32
33
34
 346.	[func]		Add support for .digrc config file, in the
			user's current directory

35
36
37
38
39
40
 345.	[bug]		Large-scale changes/cleanups to dig:
			* Significantly improve structure handling
			* Don't pre-load entire batch files
			* Add name/rr counting/limiting
			* Fix SIGINT handling
			* Shorten timeouts to match v8's behavior
41
42
43
44
45

 344.	[bug]		When shutting down, lwresd sometimes tried
			to shut down its client tasks twice, 
			triggering an assertion.

46
47
48
49
50
51
52
53
54
 343.	[bug]		Although zone maintenance SOA queries and
			notify requests were signed with TSIG keys
			when configured for the server in case,
			the TSIG was not verified on the response.

 342.	[bug]		The wrong name was being passed to
			dns_name_dup() when generating a TSIG
			key using TKEY.

55
56
57
58
59
60
61
 341.	[func]		Support 'key' clause in named.conf zone masters 
			statement:

				masters { 
					10.0.0.1 port 666 key "foo";
					10.0.0.2 ;
				};
62

63
64
65
 340.	[bug]		The top-level COPYRIGHT file was missing from
			the distribution.

Andreas Gustafsson's avatar
   
Andreas Gustafsson committed
66
67
68
69
 339.	[bug]		DNSSEC validation of the response to an ANY
			query at a name with a CNAME RR in a secure
			zone triggered an assertion failure.

70
71
 338.	[bug]		lwresd logged to syslog as named, not lwresd.

72
73
74
 337.	[bug]		"dig" did not recognize "nsap-ptr" as an RR type
			on the command line.

75
76
77
78
 336.	[bug]		"dig -f" used 64 k of memory for each line in
			the file.  It now uses much less, though still
			proportionally to the file size.

79
80
81
 335.	[bug]		named would occasionally attempt recursion when
			it was disallowed or undesired.

82
83
 334.	[func]		Added hmac-md5 to libisc.

84
 333.	[bug]		The resolver incorrectly accepted referrals to
85
86
			domains that were not parents of the query name,
			causing assertion failures.
87

88
89
 332.	[func]		New function dns_name_reset().

90
91
 331.	[bug]		Only log "recursion denied" if RD is set. (RT #178)

92
93
 330.	[func]		New function isc_log_wouldlog().

94
95
96
97
 329.	[func]		omapi_auth_register() now takes a size_t argument for
			the length of a key's secret data.  Previously
			OMAPI only stored secrets up to the first NUL byte.

98
99
 328.	[func]		Added isc_base64_decodestring().

100
101
102
 327.	[bug]		rndc.conf parser wasn't correctly recognising an IP
			address where a host specification was required.

103
104
 326.	[func]		'keys' in an 'inet' control statement is now
			required and must have at least one item in it.
105
106
			A "not supported" warning is now issued if a 'unix'
			control channel is defined.
107

108
109
 325.	[bug]		isc_lex_gettoken was processing octal strings when
			ISC_LEXOPT_CNUMBER was not set.
Andreas Gustafsson's avatar
Andreas Gustafsson committed
110

111
112
113
114
115
116
117
 324.	[func]		In the resolver, turn EDNS0 off if there is no
			response after a number of retransmissions.
			This is to allow queries some chance of succeeding
			even if all the authoritative servers of a zone
			silently discard EDNS0 requests instead of 
			sending an error response like they ought to.

118
119
120
121
122
123
 323.	[bug]		dns_rbt_findname() did not ignore empty rbt nodes.
			Because of this, servers authoritative for a parent 
			and grandchild zone but not authoritative for the
			intervening child zone did not correctly issue
			referrals to the servers of the child zone.

124
 322.	[bug]		Queries for KEY RRs are now sent to the parent 
Andreas Gustafsson's avatar
Andreas Gustafsson committed
125
			server before the authoritative one, making
126
127
128
			DNSSEC insecurity proofs work in many cases
			where they previously didn't.

129
130
131
132
133
 321.	[bug]		When synthesizing a CNAME RR for a DNAME
			response, query_addcname() failed to intitialize
			the type and class of the CNAME dns_rdata_t,
			causing random failures.

134
135
136
137
138
 320.	[func]		Multiple rndc changes: parses an rndc.conf file,
			uses authentication to talk to named, command
			line syntax changed.  This will all be described
			in the ARM.

139
140
141
 319.	[func]		The named.conf "controls" statement is now used
			to configure the OMAPI command channel.

142
143
144
 318.	[func]		dns_c_ndcctx_destroy() could never return anything
			except ISC_R_SUCCESS; made it have void return instead.

145
146
147
148
 317.	[func]		Use callbacks from libomapi to determine if a
			new connection is valid, and if a key requested
			to be used with that connection is valid.

149
150
 316.	[bug]		Generate a warning if we detect an unexpected <eof>
			but treat as <eol><eof>.
151

Mark Andrews's avatar
Mark Andrews committed
152
 315.	[bug]		Handle non-empty blanks lines. (RT #163)
153

154
155
 314.	[func]		The named.conf controls statement can now have 
			more than one key specified for the inet clause.
156

157
 313.	[bug]		When parsing resolv.conf, don't terminate on an
158
			error.	Instead, parse as much as possible, but
159
160
			still return an error if one was found.

161
162
163
164
165
 312.	[bug]		Increase the number of allowed elements in the
			resolv.conf search path from 6 to 8.  If there
			are more than this, ignore the remainder rather
			than returning a failure in lwres_conf_parse.

166
167
168
 311.	[bug]		lwres_conf_parse failed when the first line of
			resolv.conf was empty or a comment.

169
170
171
172
173
174
175
176
177
178
179
180
181
182
 310.	[func]		Changes to named.conf "controls" statement (inet
			subtype only)

			  - support "keys" clause

				controls {
				   inet * port 1024
					allow { any; } keys { "foo"; }
				}

			  - allow "port xxx" to be left out of statement,
			    in which case it defaults to omapi's default port
			    of 953.
 
183
184
185
186
187
188
 309.	[bug]		When sending a referral, the server did not look
			for name server addresses as glue in the zone
			holding the NS RRset in the case where this zone
			was not the same as the one where it looked for
			name server addresses as authoritative data.

189
190
191
 308.	[bug]		Treat a SOA record not at top of zone as an error
			when loading a zone. (RT #154)

192
193
194
195
196
197
 307.	[bug]		When canceling a query, the resolver didn't check for
			isc_socket_sendto() calls that did not yet have their
			completion events posted, so it could (rarely) end up
			destroying the query context and then want to use
			it again when the send event posted, triggering an
			assertion as it tried to cancel an already-canceled
198
			query.	(RT #77)
199

200
 306.	[bug]		Reading HMAC-MD5 private key files didn't work.
201

202
 305.	[bug]		When reloading the server with a config file 
Andreas Gustafsson's avatar
style    
Andreas Gustafsson committed
203
204
205
206
207
208
			containing a syntax error, it could catch an
			assertion failure trying to perform zone
			maintenance on tentatively created zones whose
			views were never fully configured and lacked
			an address database.

209
210
211
212
 304.	[bug]		If more than LWRES_CONFMAXNAMESERVERS servers
			are listed in resolv.conf, silently ignore them
			instead of returning failure.

213
 303.	[bug]		Add additional sanity checks to differentiate a AXFR
214
215
			response vs a IXFR response. (RT #157)

Andreas Gustafsson's avatar
style    
Andreas Gustafsson committed
216
217
218
 302.	[bug]		In dig, host, and nslookup, MXNAME should be large 
			enough to hold any legal domain name in presentation
			format + terminating NULL.
219

Andreas Gustafsson's avatar
style    
Andreas Gustafsson committed
220
 301.	[bug]		Uninitalised pointer in host:printmessage(). (RT #159)
221

222
223
224
225
226
227
 300.	[bug]		Using both <isc/net.h> and <lwres/net.h> didn't work
			on platforms lacking IPv6 because each included their
			own ipv6 header file for the missing definitions.  Now
			each library's ipv6.h defines the wrapper symbol of
			the other (ISC_IPV6_H and LWRES_IPV6_H).

228
229
230
 299.	[cleanup]	Get the user and group information before changing the
			root directory, so the administrator does not need to
			keep a copy of the user and group databases in the
231
			chroot'ed environment.	Suggested by Hakan Olsson.
232

233
234
235
236
 298.	[bug]		A mutex deadlock occurred during shutdown of the
			interface manager under certain conditions.
			Digital Unix systems were the most affected.

237
238
 297.	[bug]		Specifying a key name that wasn't fully qualified
			in certain parts of the config file could cause
239
			an assertion failure.
240

241
242
243
244
 296.	[bug]		"make install" from a separate build directory
			failed unless configure had been run in the source
			directory, too.

245
246
247
248
249
250
251
252
 295.	[bug]		When invoked with type==CNAME and a message
			not constructed by dns_message_parse(),
			dns_message_findname() failed to find anything
			due to checking for attribute bits that are set
			only in dns_message_parse().   This caused an
			infinite loop when constructing the response to
			an ANY query at a CNAME in a secure zone.

253
254
255
256
257
 294.	[bug]		If we run out of space in while processing glue
			when reading a master file and commit "current name"
			reverts to "name_current" instead of staying as
			"name_glue".

258
 293.	[port]		Add support for FreeBSD 4.0 system tests.
259

260
261
262
263
264
265
266
 292.	[bug]		Due to problems with the way some operating systems
			handle simultaneous listening on IPv4 and IPv6
			addresses, the server no longer listens on IPv6
			addresses by default.  To revert to the previous
			behavior, specify "listen-on-v6 { any; };" in
			the config file.

267
268
269
270
 291.	[func]		Caching servers no longer send outgoing queries
			over TCP just because the incoming recursive query
			was a TCP one.

271
 290.	[cleanup]	+twiddle option to dig (for testing only) removed.
272

273
274
275
276
277
278
279
280
281
 289.	[cleanup]	dig is now installed in $bindir instead of $sbindir.
			host is now installed in $bindir.  (Be sure to remove
			any $sbindir/dig from a previous release.)

 288.	[func]		rndc is now installed by "make install" into $sbindir.

 287.	[bug]		rndc now works again as "rndc 127.1 reload" (for
			only that task).  Parsing its configuration file and
			using digital signatures for authentication has been
David Lawrence's avatar
typos    
David Lawrence committed
282
			disabled until named supports the "controls" statement,
283
284
			post-9.0.0.

285
286
287
288
289
 286.	[bug]		On Solaris 2, when named inherited a signal state 
			where SIGHUP had the SIG_IGN action, SIGHUP would
			be ignored rather than causing the server to reload
			its configuration.

290
291
 285.	[bug]		A change made to the dst API for beta4 inadvertently
			broke OMAPI's creation of a dst key from an incoming
292
			message, causing an assertion to be triggered.	Fixed.
293

294
295
296
297
298
299
 284.	[func]		The DNSSEC key generation and signing tools now
			generate randomness from keyboard input on systems
			that lack /dev/random.

 283.	[cleanup]	The 'lwresd' program is now a link to 'named'.

300
 282.	[bug]		The lexer now returns ISC_R_RANGE if parsed integer is 
301
			too big for an unsigned long.
302

303
 281.	[bug]		Fixed list of recognized config file category names.
304

305
 280.	[func]		Add isc-config.sh, which can be used to more
Brian Wellington's avatar
Brian Wellington committed
306
307
308
			easily build applications that link with
			our libraries.

309
310
311
312
 279.	[bug]		Private omapi function symbols shared between
			two or more files in libomapi.a were not namespace
			protected using the ISC convention of starting with
			the library name and two underscores ("omapi__"...)
313

314
315
316
317
 278.	[bug]		bin/named/logconf.c:category_fromconf() didn't take
			note of when isc_log_categorybyname() wasn't able
			to find the category name and would then apply the
			channel list of the unknown category to all categories.
318

319
320
321
322
323
 277.	[bug]		isc_log_categorybyname() and isc_log_modulebyname()
			would fail to find the first member of any category
			or module array apart from the internal defaults.
			Thus, for example, the "notify" category was improperly
			configured by named.
324

325
326
 276.	[bug]		dig now supports maximum sized TCP messages.

Andreas Gustafsson's avatar
Andreas Gustafsson committed
327
328
 275.	[bug]		The definition of lwres_gai_strerror() was missing 
			the lwres_ prefix.
329

Andreas Gustafsson's avatar
Andreas Gustafsson committed
330
331
 274.	[bug]		TSIG AXFR verify failed when talking to a BIND 8
			server.
332

333
334
335
336
337
 273.	[func]		The default for the 'transfer-format' option is
			now 'many-answers'.  This will break zone transfers
			to BIND 4.9.5 and older unless there is an explicit
			'one-answer' configuration.

338
339
340
341
342
343
 272.	[bug]		The sending of large TCP responses was canceled
			in mid-transmission due to a race condition
			caused by the failure to set the client object's
			"newstate" variable correctly when transitioning
			to the "working" state.

Brian Wellington's avatar
Brian Wellington committed
344
345
346
 271.	[func]		Attempt to probe the number of cpus in named
			if unspecified rather than defaulting to 1.

347
348
 270.	[func]		Allow maximum sized TCP answers.

349
350
351
352
 269.	[bug]		Failed DNSSEC validations could cause an assertion
			failure by causing clone_results() to be called with
			with hevent->node == NULL.

353
354
355
356
 268.	[doc]		A plain text version of the Administrator 
			Reference Manual is now included in the distribution,
			as doc/arm/Bv9ARM.txt.

357
358
 267.	[func]		Nsupdate is now provided in the distribution.

359
 266.	[bug]		zone.c:save_nsrrset() node was not initalized.
360

Mark Andrews's avatar
typo    
Mark Andrews committed
361
 265.	[bug]		dns_request_create() now works for TCP.
362
363
364
365
366
367
368

 264.	[func]		Dispatch can not take TCP sockets in connecting
			state.	Set DNS_DISPATCHATTR_CONNECTED when calling
			dns_dispatch_createtcp() for connected TCP sockets
			or call dns_dispatch_starttcp() when the socket is
			connected.

369
370
371
372
373
374
375
 263.	[func]		New logging channel type 'stderr'

				channel some-name {
					stderr;
					severity error;
				}

376
 262.	[bug]		'master' was not initalized in zone.c:stub_callback().
377
378

 261.	[func]		Add dns_zone_markdirty().
379

380
381
382
383
 260.	[bug]		Running named as a non-root user failed on Linux
			kernels new enough to support retaining capabilities
			after setuid().

384
385
386
387
 259.	[func]		New random-device and random-seed-file statements
			for global options block of named.conf. Both accept
			a single string argument.

388
389
 258.	[bug]		Fixed printing of lwres_addr_t.address field.

390
391
 257.	[bug]		The server detached the last zone manager reference
			too early, while it could still be in use by queries.
392
			This manifested itself as assertion failures during the
393
394
395
396
397
398
399
400
			shutdown process for busy name servers (RT #133).

 256.	[func]		isc_ratelimiter_t now has attach/detach semantics, and
			isc_ratelimiter_shutdown guarantees that the rate
			limiter is detached from its task.

 255.	[func]		New function dns_zonemgr_attach().

401
 254.	[bug]		Suppress "query denied" messages on additional data
402
403
			lookups.

Andreas Gustafsson's avatar
Andreas Gustafsson committed
404
405
	--- 9.0.0b4 released ---

406
407
408
409
 253.	[func]		resolv.conf parser now recognises ';' and '#' as
			comments (anywhere in line, not just as the beginning).

 252.	[bug]		resolv.conf parser mishandled masks on sortlists.
David Lawrence's avatar
typos    
David Lawrence committed
410
			It also aborted when an unrecognized keyword was seen,
411
412
			now it silently ignores the entire line.

413
414
 251.	[bug]		lwresd caught an assertion failure on startup.

415
416
417
418
419
420
 250.	[bug]		fixed handling of size+unit when value would be too
			large for internal representation.

 249.	[cleanup]	max-cache-size config option now takes a size-spec
			like 'datasize', except 'default' is not allowed.

421
422
423
 248.	[bug]		global lame-ttl option was not being printed when
			config structures were written out.

424
425
 247.	[cleanup]	Rename cache-size config option to max-cache-size.

James Brister's avatar
typo.    
James Brister committed
426
 246.	[func]		Rename global option cachesize to cache-size and
427
			add corresponding option to view statement.
428

429
 245.	[bug]		If an uncompressed name will take more than 255
Andreas Gustafsson's avatar
Andreas Gustafsson committed
430
			bytes and the buffer is sufficiently long,
431
			dns_name_fromwire should return DNS_R_FORMERR,
Andreas Gustafsson's avatar
Andreas Gustafsson committed
432
433
434
435
			not ISC_R_NOSPACE.  This bug caused cause the
			server to catch an assertion failure when it
			received a query for a name longer than 255
			bytes.
436

437
438
439
440
441
442
443
 244.	[bug]		empty named.conf file and empty options statement are
			now parsed properly.

 243.	[func]		new cachesize option for named.conf

 242.	[cleanup]	fixed incorrect warning about auth-nxdomain usage.

444
445
446
 241.	[cleanup]	nscount and soacount have been removed from the
			dns_master_*() arguement lists.

447
448
449
 240.	[func]		databases now come in three flavours: zone, cache
			and stub.

450
451
452
453
 239.	[feature]	If ISC_MEM_DEBUG is enabled, the variable
			isc_mem_debugging controls whether messages
			are printed or not.

454
455
456
457
458
459
 238.	[cleanup]	A few more compilation warnings have been quieted:
			+ missing sigwait prototype on BSD/OS 4.0/4.0.1.
			+ PTHREAD_ONCE_INIT unbraced initializer warnings on
				Solaris 2.8.
			+ IN6ADDR_ANY_INIT unbraced initializer warnings on
				BSD/OS 4.*, Linux and Solaris 2.8.
David Lawrence's avatar
David Lawrence committed
460

461
 237.	[bug]		If connect() returned ENOBUFS when the resolver was
David Lawrence's avatar
David Lawrence committed
462
			initiating a TCP query, the socket didn't get
463
			destroyed, and the server did not shut down cleanly. 
464

465
466
467
468
469
470
 236.	[func]		Added new listen-on-v6 config file statement.

 235.	[func]		Consider it a config file error if a listen-on 
			statement has an IPv6 address in it, or a 
			listen-on-v6 statement has an IPv4 address in it.
			
471
472
473
474
 234.	[bug]		Allow a trusted-key's first field (domain-name) be
			either a quoted or an unquoted string, instead of
			requiring a quoted string.

475
476
477
 233.	[cleanup]	Convert all config structure integer values to unsigned
			integer (isc_uint32_t) to match grammer.

478
479
 232.	[bug]		Allow slave zones to not have a file.

480
481
482
483
484
 231.	[func]		Support new 'port' clause in config file options
			section. Causes 'listen-on', 'masters' and
			'also-notify' statements to use its value instead of
			default (53).

Brian Wellington's avatar
Brian Wellington committed
485
486
 230.	[func]		Replace the dst sign/verify API with a cleaner one.

487
488
489
490
491
492
493
 229.	[func]		Support config file sig-validity-interval statement 
			in options, views and zone statements (master 
			zones only).

 228.	[cleanup]	Logging messages in config module stripped of 
			trailing period.

494
495
496
497
 227.	[cleanup]	The enumerated identifiers dns_rdataclass_*,
			dns_rcode_*, dns_opcode_*, and dns_trust_* are
			also now cast to their appropriate types, as with
			dns_rdatatype_* in item number 225 below.
498
499
500

 226.	[func]		dns_name_totext() now always prints the root name as
			'.', even when omit_final_dot is true.
501

502
503
504
505
 225.	[cleanup]	The enumerated dns_rdatatype_* identifiers are now
			cast to dns_rdatatype_t via macros of their same name
			so that they are of the proper integral type wherever
			a dns_rdatatype_t is needed.
506

507
508
509
510
511
 224.	[cleanup]	The entire project builds cleanly with gcc's
			-Wcast-qual and -Wwrite-strings warnings enabled,
			which is now the default when using gcc.  (Warnings
			from confparser.c, because of yacc's code, are
			unfortunately to be expected.)
512

513
514
515
516
 223.	[func]		Several functions were reprototyped to qualify one
			or more of their arguments with "const".  Similarly,
			several functions that return pointers now have
			those pointers qualified with const.
517

518
519
 222.	[bug]		The global 'also-notify' option was ignored.

Andreas Gustafsson's avatar
RT #127    
Andreas Gustafsson committed
520
521
522
523
 221.	[bug]		An uninitialized variable was sometimes passed to
			dns_rdata_freestruct() when loading a zone, causing
			an assertion failure.

524
525
526
527
 220.	[cleanup]	Set the default outgoing port in the view, and
			set it in sockaddrs returned from the ADB.
			[31-May-2000 explorer]

528
529
530
 219.	[bug]		Signed truncated messages more correctly follow
			the respective specs.

531
532
533
 218.	[func]		When an rdataset is signed, its ttl is normalized
			based on the signature validity period.

534
535
 217.	[func]		Also-notify and trusted-keys can now be used in
			the 'view' statement.
536

537
 216.	[func]		The 'max-cache-ttl' and 'max-ncache-ttl' options 
538
			now work.
539

540
541
542
543
 215.	[bug]		Failures at certain points in request processing
			could cause the assertion INSIST(client->lockview
			== NULL) to be triggered.

544
 214.	[func]		New public function isc_netaddr_format(), for
545
546
			formatting network addresses in log messages.

547
 213.	[bug]		Don't leak memory when reloading the zone if
548
549
			an update-policy clause was present in the old zone.

550
 212.	[func]		Added dns_message_get/settsigkey, to make TSIG
551
552
			key management reasonable.

553
554
555
556
557
558
559
 211.	[func]		The 'key' and 'server' statements can now occur
			inside 'view' statements.

 210.	[bug]		The 'allow-transfer' option was ignored for slave
			zones, and the 'transfers-per-ns' option was
			was ignored for all zones.

Olafur Gudmundsson's avatar
   
Olafur Gudmundsson committed
560
561
 209.	[cleanup]	Upgraded openssl files to new version 0.9.5a

562
563
 208.	[func]		Added ISC_OFFSET_MAXIMUM for the maximum value
			of an isc_offset_t.
564

565
 207.	[func]		The dnssec tools properly use the logging subsystem.
566

567
 206.	[cleanup]	dst now stores the key name as a dns_name_t, not
568
569
			a char *.

570
571
572
573
574
575
 205.	[cleanup]	On IRIX, turn off the mostly harmless warnings 1692
			("prototyped function redeclared without prototype")
			and 1552 ("variable ... set but not used") when
			compiling in the lib/dns/sec/{dnssafe,openssl}
			directories, which contain code imported from outside
			sources.
576

577
578
579
 204.	[cleanup]	On HP/UX, pass +vnocompatwarnings to the linker
			to quiet the warnings that "The linked output may not
			run on a PA 1.x system."
580

581
 203.	[func]		notify and zone soa queries are now tsig signed when
582
583
			appropriate.

584
585
586
 202.	[func]		isc_lex_getsourceline() changed from returning int
			to returning unsigned long, the type of its underlying
			counter.
587

Andreas Gustafsson's avatar
Andreas Gustafsson committed
588
589
590
591
 201.	[cleanup]	Removed the test/sdig program, it has been
			replaced by bin/dig/dig.


Andreas Gustafsson's avatar
Andreas Gustafsson committed
592
593
	--- 9.0.0b3 released ---

594
595
596
597
 200.	[bug]		Failures in sending query responses to clients
			(e.g., running out of network buffers) were
			not logged.

598
599
600
601
 199.	[bug]		isc_heap_delete() sometimes violated the heap
			invariant, causing timer events not to be posted
			when due.

602
 198.	[func]		Dispatch managers hold memory pools which
603
			any managed dispatcher may use.	 This allows
604
605
606
607
608
609
610
611
612
613
			us to avoid dipping into the memory context for
			most allocations.  [19-May-2000 explorer]

 197.	[bug]		When an incoming AXFR or IXFR completes, the
			zone's internal state is refreshed from the
			SOA data.  [19-May-2000 explorer]

 196.	[func]		Dispatchers can be shared easily between views
			and/or interfaces.  [19-May-2000 explorer]

614
615
616
617
 195.	[bug]		Including the NXT record of the root domain
			in a negative response caused an assertion
			failure.

618
619
620
621
 194.	[doc]		The PDF version of the Administrator's Reference
			Manual is no longer included in the ISC BIND9
			distribution.

622
 193.	[func]		changed dst_key_free() prototype.
623

624
625
626
627
 192.	[bug]		Zone configuration validation is now done at end 
			of config file parsing, and before loading
			callbacks.

628
629
 191.	[func]		Patched to compile on UnixWare 7.x.  This platform
			is not directly supported by the ISC.
630

631
 190.	[cleanup]	The DNSSEC tools have been moved to a separate 
632
633
634
635
636
637
638
639
640
641
642
643
644
645
			directory dnssec/ and given the following new,
			more descriptive names:

			      dnssec-keygen
			      dnssec-signzone
			      dnssec-signkey
			      dnssec-makekeyset

			Their command line arguments have also been changed to
			be more consistent.  dnssec-keygen now prints the
			name of the generated key files (sans extension)
			on standard output to simplify its use in automated
			scripts.

646
647
648
649
650
651
652
653
654
655
656
 189.	[func]		isc_time_secondsastimet(), a new function, will ensure
			that the number of seconds in an isc_time_t does not
			exceed the range of a time_t, or return ISC_R_RANGE.
			Similarly, isc_time_now(), isc_time_nowplusinterval(),
			isc_time_add() and isc_time_subtract() now check the
			range for overflow/underflow.  In the case of
			isc_time_subtract, this changed a calling requirement
			(ie, something that could generate an assertion)
			into merely a condition that returns an error result.
			isc_time_add() and isc_time_subtract() were void-
			valued before but now return isc_result_t.
657

658
659
660
 188.	[func]		Log a warning message when an incoming zone transfer
			contains out-of-zone data.

661
662
663
664
 187.	[func]		isc_ratelimter_enqueue() has an additional arguement
			'task'.

 186.	[func]		dns_request_getresponse() has an additional arguement
665
666
			'preserve_order'.

667
668
669
670
 185.	[bug]		Fixed up handling of ISC_MEMCLUSTER_LEGACY.  Several
			public functions did not have an isc__ prefix, and
			referred to functions that had previously been
			renamed.
671

672
673
674
 184.	[cleanup]	Variables/functions which began with two leading
			underscores were made to conform to the ANSI/ISO
			standard, which says that such names are reserved.
675

676
677
 183.	[func]		ISC_LOG_PRINTTAG option for log channels.  Useful
			for logging the program name or other identifier.
678

679
680
 182.	[cleanup]	New commandline parameters for dnssec tools

681
682
 181.	[func]		Added dst_key_buildfilename and dst_key_parsefilename

683
 180.	[func]		New isc_result_t ISC_R_RANGE.  Supersedes DNS_R_RANGE.
David Lawrence's avatar
David Lawrence committed
684

James Brister's avatar
James Brister committed
685
686
687
688
689
690
691
692
693
694
695
696
697
 179.	[func]		options named.conf statement *must* now come
			before any zone or view statements.

 178.	[func]		Post-load of named.conf check verifies a slave zone
			has non-empty list of masters defined.

 177.	[func]		New per-zone boolean:

				enable-zone yes | no ;

			intended to let a zone be disabled without having
			to comment out the entire zone statement.

698
 176.	[func]		New global and per-view option:
James Brister's avatar
James Brister committed
699
700
701
702
703
				
				max-cache-ttl number

 175.	[func]		New global and per-view option:

704
				additional-data internal | minimal | maximal;
James Brister's avatar
James Brister committed
705

706
 174.	[func]		New public function isc_sockaddr_format(), for
707
708
			formatting socket addresses in log messages.

709
 173.	[func]		Keep a queue of zones waiting for zone transfer
710
711
712
			quota so that a new transfer can be dispatched
			immediately whenever quota becomes available.

713
 172.	[bug]		$TTL directive was sometimes missing from dumped 
714
715
716
			master files because totext_ctx_init() failed to
			initialize ctx->current_ttl_valid.

717
 171.	[cleanup]	On NetBSD systems, the mit-pthreads or
Andreas Gustafsson's avatar
Andreas Gustafsson committed
718
719
720
721
			unproven-pthreads library is now always used
			unless --with-ptl2 is explicitly specified on
			the configure command line.  The
			--with-mit-pthreads option is no longer needed
722
723
			and has been removed.

724
725
726
727
728
729
730
731
732
 170.	[cleanup]	Remove inter server consistancy checks from zone,
			these should return as a seperate module in 9.1.
			dns_zone_checkservers(), dns_zone_checkparents(),
			dns_zone_checkchildren(), dns_zone_checkglue().

			Remove dns_zone_setadb(), dns_zone_setresolver(),
			dns_zone_setrequestmgr() these should now be found
			via the view.

733
734
 169.	[func]		ratelimiter can now process N events per interval.

735
736
737
738
 168.	[bug]		include statements in named.conf caused syntax errors
			due to not consuming the semicolon ending the include
			statement before switching input streams.

739
740
741
742
743
744
745
 167.	[bug]		Make lack of masters for a slave zone a soft error.

 166.	[bug]		Keygen was overwriting existing keys if key_id
			conflicted, now it will retry, and non-null keys
			with key_id == 0 are not generated anymore.  Key
			was not able to generate NOAUTHCONF DSA key,
			increased RSA key size to 2048 bits.
Olafur Gudmundsson's avatar
Olafur Gudmundsson committed
746

747
748
 165.	[cleanup]	Silence "end-of-loop condition not reached" warnings
			from Solaris compiler.
749

750
 164.	[func]		Added functions isc_stdio_open(), isc_stdio_close(),
751
752
753
			isc_stdio_seek(), isc_stdio_read(), isc_stdio_write(),
			isc_stdio_flush(), isc_stdio_sync(), isc_file_remove()
			to encapsulate nonportable usage of errno and sync.
754

755
 163.	[func]		Added result codes ISC_R_FILENOTFOUND and
756
			ISC_R_FILEEXISTS.
757

758
 162.	[bug]		Ensure proper range for arguments to ctype.h functions.
759

760
761
 161.	[cleanup]	error in yyparse prototype that only HPUX caught.

762
763
764
 160.	[cleanup]	getnet*() are not going to be implemented at this
			stage.

765
766
767
 159.	[func]		Redefinition of config file elements is now an
			error (instead of a warning).

768
 158.	[bug]		Log channel and category list copy routines
769
770
			weren't assigning properly to output parameter.

771
 157.	[port]		Fix missing prototype for getopt().
772

773
774
775
776
 156.	[func]		Support new 'database' statement in zone.

				database "quoted-string";

777
778
 155.	[bug]		ns_notify_start() was not detaching the found zone.

779
 154.	[func]		The signer now logs libdns warnings to stderr even when
780
			not verbose, and in a nicer format.
Andreas Gustafsson's avatar
typos    
Andreas Gustafsson committed
781
782

 153.	[func]		dns_rdata_tostruct() 'mctx' is now optional.  If 'mctx'
783
784
			is NULL then you need to preserve the 'rdata' until
			you have finished using the structure as there may be
Andreas Gustafsson's avatar
typos    
Andreas Gustafsson committed
785
			references to the associated memory.  If 'mctx' is 
786
787
			non-NULL it is guaranteed that there are no references
			to memory associated with 'rdata'.
788
789

			dns_rdata_freestruct() must be called if 'mctx' was
Andreas Gustafsson's avatar
typos    
Andreas Gustafsson committed
790
			non-NULL and may safely be called if 'mctx' was NULL.
791

792
 152.	[bug]		keygen dumped core if domain name argument was omitted
793
794
			from command line.

795
 151.	[func]		Support 'disabled' statement in zone config (causes
796
797
798
			zone to be parsed and then ignored). Currently must
			come after the 'type' clause.

799
 150.	[func]		Support optional ports in masters and also-notify
800
801
802
803
			statements: 

				masters [ port xxx ] { y.y.y.y [ port zzz ] ; }

804
 149.	[cleanup]	Removed usused argument 'olist' from
805
			dns_c_view_unsetordering().
806

807
 148.	[cleanup]	Stop issuing some warnings about some configuration
808
			file statements that were not implemented, but now are.
809

810
 147.	[bug]		Changed yacc union size to be smaller for yaccs that
811
812
			put yacc-stack on the real stack.

813
814
815
816
817
818
819
 146.	[cleanup]	More general redundant header file cleanup.  Rather
			than continuing to itemize every header which changed,
			this changelog entry just notes that if a header file
			did not need another header file that it was including
			in order to provide its advertized functionality, the
			inclusion of the other header file was removed.	 See
			util/check-includes for how this was tested.
820

821
822
823
 145.	[cleanup]	Added <isc/lang.h> and ISC_LANG_BEGINDECLS/
			ISC_LANG_ENDDECLS to header files that had function
			prototypes, and removed it from those that did not.
824

825
826
827
 144.	[cleanup]	libdns header files too numerous to name were made
			to conform to the same style for multiple inclusion
			protection.
828

829
 143.	[func]		Added function dns_rdatatype_isknown().
830

831
832
 142.	[cleanup]	<isc/stdtime.h> does not need <time.h> or
			<isc/result.h>.
833

834
835
836
 141.	[bug]		Corrupt requests with multiple questions could
			cause an assertion failure.

837
 140.	[cleanup]	<isc/time.h> does not need <time.h> or <isc/result.h>.
838

839
840
 139.	[cleanup]	<isc/net.h> now includes <isc/types.h> instead of
			<isc/int.h> and <isc/result.h>.
841

842
843
844
 138.	[cleanup]	isc_strtouq moved from str.[ch] to string.[ch] and
			renamed isc_string_touint64.  isc_strsep moved from
			strsep.c to string.c and renamed isc_string_separate.
845

846
847
848
849
 137.	[cleanup]	<isc/commandline.h>, <isc/mem.h>, <isc/print.h>
			<isc/serial.h>, <isc/string.h> and <isc/offset.h>
			made to conform to the same style for multiple
			inclusion protection.
850

851
852
853
 136.	[cleanup]	<isc/commandline.h>, <isc/interfaceiter.h>,
			<isc/net.h> and Win32's <isc/thread.h> needed
			ISC_LANG_BEGINDECLS/ISC_LANG_ENDDECLS.
854

855
856
857
858
 135.	[cleanup]	Win32's <isc/condition.h> did not need <isc/result.h>
			or <isc/boolean.h>, now uses <isc/types.h> in place
			of <isc/time.h>, and needed ISC_LANG_BEGINDECLS
			and ISC_LANG_ENDDECLS.
859

860
 134.	[cleanup]	<isc/dir.h> does not need <limits.h>.
861

862
 133.	[cleanup]	<isc/ipv6.h> needs <isc/platform.h>.
863

864
865
 132.	[cleanup]	<isc/app.h> does not need <isc/task.h>, but does
			need <isc/eventclass.h>.
866

867
868
 131.	[cleanup]	<isc/mutex.h> and <isc/util.h> need <isc/result.h>
			for ISC_R_* codes used in macros.
869

870
871
872
 130.	[cleanup]	<isc/condition.h> does not need <pthread.h> or
			<isc/boolean.h>, and now includes <isc/types.h>
			instead of <isc/time.h>.
873

874
 129.	[bug]		The 'default_debug' log channel was not set up when
875
876
			'category default' was present in the config file

877
878
 128.	[cleanup]	<isc/dir.h> had ISC_LANG_BEGINDECLS instead of
			ISC_LANG_ENDDECLS at end of header.
879

880
881
882
883
884
885
 127.	[cleanup]	The contracts for the comparision routines
			dns_name_fullcompare(), dns_name_compare(),
			dns_name_rdatacompare(), and dns_rdata_compare() now
			specify that the order value returned is < 0, 0, or > 0
			instead of -1, 0, or 1.

886
 126.	[cleanup]	<isc/quota.h> and <isc/taskpool.h> need <isc/lang.h>.
887

888
889
890
 125.	[cleanup]	<isc/eventclass.h>, <isc/ipv6.h>, <isc/magic.h>,
			<isc/mutex.h>, <isc/once.h>, <isc/region.h>, and
			<isc/resultclass.h> do not need <isc/lang.h>.
891

892
 124.	[func]		signer now imports parent's zone key signature
Brian Wellington's avatar
Brian Wellington committed
893
894
895
			and creates null keys/sets zone status bit for
			children when necessary

896
 123.	[cleanup]	<isc/event.h> does not need <stddef.h>.
897

898
899
 122.	[cleanup]	<isc/task.h> does not need <isc/mem.h> or
			<isc/result.h>.
900

901
902
903
904
 121.	[cleanup]	<isc/symtab.h> does not need <isc/mem.h> or
			<isc/result.h>.	 Multiple inclusion protection
			symbol fixed from ISC_SYMBOL_H to ISC_SYMTAB_H.
			isc_symtab_t moved to <isc/types.h>.
905

906
907
908
 120.	[cleanup]	<isc/socket.h> does not need <isc/boolean.h>,
			<isc/bufferlist.h>, <isc/task.h>, <isc/mem.h> or
			<isc/net.h>.
909

910
911
912
 119.	[cleanup]	structure definitions for generic rdata stuctures do
			not have _generic_ in their names.

913
914
915
 118.	[cleanup]	libdns.a is now namespace-clean, on NetBSD, excepting
			YACC crust (yyparse, etc) [2000-apr-27 explorer]

916
917
918
 117.	[cleanup]	libdns.a changes:
			dns_zone_clearnotify() and dns_zone_addnotify()
			are replaced by dns_zone_setnotifyalso().
919
			dns_zone_clearmasters() and dns_zone_addmaster()
920
921
			are replaced by dns_zone_setmasters().
			
922
923
 116.	[func]		Added <isc/offset.h> for isc_offset_t (aka off_t
			on Unix systems).
924

925
926
 115.	[port]		Shut up the -Wmissing-declarations warning about
			<stdio.h>'s __sputaux on BSD/OS pre-4.1.
927

928
929
 114.	[cleanup]	<isc/sockaddr.h> does not need <isc/buffer.h> or
			<isc/list.h>.
930

931
932
 113.	[func]		Utility programs dig and host added.

933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
 112.	[cleanup]	<isc/serial.h> does not need <isc/boolean.h>.

 111.	[cleanup]	<isc/rwlock.h> does not need <isc/result.h> or
			<isc/mutex.h>.

 110.	[cleanup]	<isc/result.h> does not need <isc/boolean.h> or
			<isc/list.h>.

 109.	[bug]		"make depend" did nothing for
			bin/tests/{db,mem,sockaddr,tasks,timers}/.

 108.	[cleanup]	DNS_SETBIT/DNS_GETBIT/DNS_CLEARBIT moved from
			<dns/types.h> to <dns/bit.h> and renamed to
			DNS_BIT_SET/DNS_BIT_GET/DNS_BIT_CLEAR.

 107.	[func]		Add keysigner and keysettool.

 106.	[func]		Allow dnssec verifications to ignore the validity
			period.	 Used by several of the dnssec tools.

 105.	[doc]		doc/dev/coding.html expanded with other
			implicit conventions the developers have used.

 104.	[bug]		Made compress_add and compress_find static to
			lib/dns/compress.c.

 103.	[func]		libisc buffer API changes for <isc/buffer.h>:
			Added:
				isc_buffer_base(b)	    (pointer)
				isc_buffer_current(b)	    (pointer)
				isc_buffer_active(b)	    (pointer)
				isc_buffer_used(b)	    (pointer)
				isc_buffer_length(b)		(int)
				isc_buffer_usedlength(b)	(int)
				isc_buffer_consumedlength(b)	(int)
				isc_buffer_remaininglength(b)	(int)
				isc_buffer_activelength(b)	(int)
				isc_buffer_availablelength(b)	(int)
			Removed:
				ISC_BUFFER_USEDCOUNT(b)
				ISC_BUFFER_AVAILABLECOUNT(b)
				isc_buffer_type(b)
			Changed names:
				isc_buffer_used(b, r) ->
					isc_buffer_usedregion(b, r)
				isc_buffer_available(b, r) ->
					isc_buffer_available_region(b, r)
				isc_buffer_consumed(b, r) ->
					isc_buffer_consumedregion(b, r)
				isc_buffer_active(b, r) ->
					isc_buffer_activeregion(b, r)
				isc_buffer_remaining(b, r) ->
					isc_buffer_remainingregion(b, r)

			Buffer types were removed, so the ISC_BUFFERTYPE_*
			macros are no more, and the type argument to
			isc_buffer_init and isc_buffer_allocate were removed.
			isc_buffer_putstr is now void (instead of isc_result_t)
			and requires that the caller ensure that there
			is enough available buffer space for the string.

 102.	[port]		Correctly detect inet_aton, inet_pton and inet_ptop
			on BSD/OS 4.1.

 101.	[cleanup]	Quieted EGCS warnings from lib/isc/print.c.

 100.	[cleanup]	<isc/random.h> does not need <isc/int.h> or
			<isc/mutex.h>.	isc_random_t moved to <isc/types.h>.

  99.	[cleanup]	Rate limiter now has separate shutdown() and
1003
1004
1005
			destroy() functions, and it guarantees that all 
			queued events are delivered even in the shutdown case.

1006
1007
  98.	[cleanup]	<isc/print.h> does not need <stdarg.h> or <stddef.h>
			unless ISC_PLATFORM_NEEDVSNPRINTF is defined.
1008

1009
1010
  97.	[cleanup]	<isc/ondestroy.h> does not need <stddef.h> or
			<isc/event.h>.
1011

1012
  96.	[cleanup]	<isc/mutex.h> does not need <isc/result.h>.
1013

1014
  95.	[cleanup]	<isc/mutexblock.h> does not need <isc/result.h>.
1015

1016
  94.	[cleanup]	Some installed header files did not compile as C++.
1017

1018
  93.	[cleanup]	<isc/msgcat.h> does not need <isc/result.h>.
1019

1020
1021
  92.	[cleanup]	<isc/mem.h> does not need <stddef.h>, <isc/boolean.h>,
			or <isc/result.h>.
1022

1023
1024
  91.	[cleanup]	<isc/log.h> does not need <sys/types.h> or
			<isc/result.h>.
1025

1026
1027
1028
  90.	[cleanup]	Removed unneeded ISC_LANG_BEGINDECLS/ISC_LANG_ENDDECLS
			from <named/listenlist.h>.

1029
  89.	[cleanup]	<isc/lex.h> does not need <stddef.h>.
1030

1031
1032
1033
  88.	[cleanup]	<isc/interfaceiter.h> does not need <isc/result.h> or
			<isc/mem.h>.  isc_interface_t and isc_interfaceiter_t
			moved to <isc/types.h>.
1034

1035
1036
  87.	[cleanup]	<isc/heap.h> does not need <isc/boolean.h>,
			<isc/mem.h> or <isc/result.h>.
1037

1038
1039
  86.	[cleanup]	isc_bufferlist_t moved from <isc/bufferlist.h> to
			<isc/types.h>.
1040

1041
1042
1043
  85.	[cleanup]	<isc/bufferlist.h> does not need <isc/buffer.h>,
			<isc/list.h>, <isc/mem.h>, <isc/region.h> or
			<isc/int.h>.
Bob Halley's avatar
update    
Bob Halley committed
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053

  84.	[func]		allow-query ACL checks now apply to all data
			added to a response.

  83.	[func]		If the server is authoritative for both a
			delegating zone and its (nonsecure) delegatee, and
			a query is made for a KEY RR at the top of the
			delegatee, then the server will look for a KEY
			in the delegator if it is not found in the delegatee.

1054
  82.	[cleanup]	<isc/buffer.h> does not need <isc/list.h>.
1055

1056
1057
  81.	[cleanup]	<isc/int.h> and <isc/boolean.h> do not need
			<isc/lang.h>.
1058

1059
  80.	[cleanup]	<isc/print.h> does not need <stdio.h> or <stdlib.h>.
1060

1061
  79.	[cleanup]	<dns/callbacks.h> does not need <stdio.h>.
1062

1063
1064
  78.	[cleanup]	lwres_conftest renamed to lwresconf_test for
			consistency with other *_test programs.
1065

1066
1067
  77.	[cleanup]	typedef of isc_time_t and isc_interval_t moved from
			<isc/time.h> to <isc/types.h>.	
1068

1069
  76.	[cleanup]	Rewrote keygen.
Brian Wellington's avatar
Brian Wellington committed
1070

1071
1072
  75.	[func]		Don't load a zone if its database file is older
			than the last time the zone was loaded.
1073

1074
1075
  74.	[cleanup]	Removed mktemplate.o and ufile.o from libisc.a,
			subsumed by file.o.
1076

1077
1078
1079
1080
1081
  73.	[func]		New "file" API in libisc, including new function
			isc_file_getmodtime, isc_mktemplate renamed to
			isc_file_mktemplate and isc_ufile renamed to
			isc_file_openunique.  By no means an exhaustive API,
			it is just what's needed for now.
1082

1083
1084
1085
1086
  72.	[func]		DNS_RBTFIND_NOPREDECESSOR and DNS_RBTFIND_NOOPTIONS
			added for dns_rbt_findnode, the former to disable the
			setting of the chain to the predecessor, and the
			latter to make clear when no options are set.
1087

1088
1089
1090
  71.	[cleanup]	Made explicit the implicit REQUIREs of
			isc_time_seconds, isc_time_nanoseconds, and
			isc_time_subtract.
1091

1092
  70.	[func]		isc_time_set() added.
Bob Halley's avatar
update    
Bob Halley committed
1093

1094
  69.	[bug]		The zone object's master and also-notify lists grew
1095
1096
			longer with each server reload.

Brian Wellington's avatar
Brian Wellington committed
1097
  68.	[func]		Partial support for SIG(0) on incoming messages.
1098

Michael Graff's avatar
update    
Michael Graff committed
1099
1100
1101
  67.	[performance]	Allow use of alternate (compile-time supplied)
			OpenSSL libraries/headers.

1102
  66.	[func]		Data in authoritative zones should have a trust level
1103
1104
			beyond secure.

1105
  65.	[cleanup]	Removed obsolete typedef of dns_zone_callbackarg_t
1106
1107
			from <dns/types.h>.

Bob Halley's avatar
update    
Bob Halley committed
1108
1109
1110
1111
  64.	[func]		The RBT, DB, and zone table APIs now allow the
			caller find the most-enclosing superdomain of
			a name.

1112
  63	[func]		Generate NOTIFY messages.
Mark Andrews's avatar
Mark Andrews committed
1113

1114
  62.	[func]		Add UDP refresh support.
Mark Andrews's avatar
Mark Andrews committed
1115

1116
  61.	[cleanup]	Use single quotes consistently in log messages.
1117

1118
1119
1120
  60.	[func]		Catch and disallow singleton types on message
			parse.

Michael Graff's avatar
update    
Michael Graff committed
1121
1122
  59.	[bug]		Cause net/host unreachable to be a hard error
			when sending and receiving.
1123

1124
1125
1126
1127
  58.	[bug]		bin/named/query.c could sometimes trigger the
			(client->query.attributes & NS_QUERYATTR_NAMEBUFUSED)
			== 0 assertion in query_newname().

1128
  57.	[func]		Added dns_nxt_typepresent()
Brian Wellington's avatar
Brian Wellington committed
1129

1130
1131
1132
1133
1134
1135
  56.	[bug]		SIG records were not properly returned in cached
			negative answers.

  55.	[bug]		Responses containing multiple names in the authority
			section were not negatively cached.

1136
1137
1138
1139
1140
  54.	[bug]		If a fetch with sigrdataset==NULL joined one with
			sigrdataset!=NULL or vice versa, the resolver
			could catch an assertion or lose signature data,
			respectively.

1141
1142
1143
  53.	[port]		freebsd 4.0: lib/isc/unix/socket.c requires
			<sys/param.h>.

1144
  52.	[bug]		rndc: taskmgr and socketmgr were not initialized
1145
1146
			to NULL.

1147
1148
  51.	[cleanup]	dns/compress.h and dns/zt.h did not need to include
			dns/rbt.h; it was needed only by compress.c and zt.c.
1149

1150
1151
  50.	[func]		RBT deletion no longer requires a valid chain to work,
			and dns_rbt_deletenode was added.