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Changelog:
Bugfixes
Fix malformed edns query assertion failure, reported by Michal Kepien (NASK).
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Changelog:
1 August 2016: Wouter
- Tag 4.1.11rc1.
- Fix nsec3 missing for nsec3 signed parent and child for DS at zonecut.
- Tag 4.1.11rc2.
8 July 2016: Wouter
- Note down tracking numbers for issue JVN#63359718 JPCERT#91251865.
5 July 2016: Wouter
- Fix #790: size-limit-xfr can stop NSD from downloading infinite zone
transfer data size, from Toshifumi Sakaguchi.
27 June 2016: Wouter
- Set default for min-refresh-time and min-retry-time to 0. Behaves
just like before, but has a configurable option in nsd.conf.
- Fix #783: Trying to run a root server without having configured it
silently gives wrong answers.
16 June 2016: Wouter
- When tcp is more than half full, use short timeout for tcp session.
- Patch for {max,min}-{refresh,retry}-time from YAMAGUCHI Takanori.
- man page entries for max-refresh-time patch.
15 June 2016: Wouter
- Fix build without IPv6, patch from Zdenek Kaspar.
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==========
FEATURES:
- ip-freebind: yesno option in nsd.conf sets IP_FREEBIND socket option
for Linux, binds to interfaces and addresses that are down.
- NSD includes AAAA before A for queries over IPV6 (in delegations).
And TC is set if no glue can be provided with a delegation because
of packet size.
- print notice that nsd is starting before taking off.
BUG FIXES:
- Fix for openssl 1.1.0, HMAC_CTX size not exported from openssl.
- Fix #751: NSD fails to occlude names below a DNAME.
- If set without nsd.db print "" as the default in the man pages.
- Fix #755: NSD spins after a zone update and a lot of TCP queries.
- Fix for NSEC3 with zone signed without exact match for empty
nonterminals, the answer for that domain gets closest encloser.
- #772 Document that recvmmsg has IPv6 problems on some linux kernels.
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original manifest.xml file and the output from "svccfg export".
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=========
BUG FIXES:
- Change the nsd.db file version because of nanosecond precision fix.
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================
FEATURES:
- #732: tcp-mss, outgoing-tcp-mss options for nsd.conf.
- #739: zonefile changes when mtime is small are detected on reload,
if filesystem supports precision mtime values.
- RR type CSYNC (RFC7477) syntax is supported.
BUG FIXES:
- take advantage of arc4random_uniform if available.
- Fix flto check for OSX clang.
- Define _DEFAULT_SOURCE with _BSD_SOURCE for glibc 2.20 on Linux.
- Fix #736: segfault during zone transfer.
- Fix #744: Fix that NSD replies for configured but unloaded zone
with SERVFAIL, not REFUSED.
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=========
FEATURES:
- support configure --with-dbfile="" for nodb mode by default, where
there is no binary database, but nsd reads and writes zonefiles.
- reuseport: no is the default, because the feature is not troublefree.
- configure --enable-ratelimit-default-is-off with --enable-ratelimit
to set the default ratelimit to disabled but available in nsd.conf.
- version: "string" option to set chaos version query reply string.
BUG FIXES:
- Fix zones updates from nsd parent event loop when there are a lot
of interfaces.
- portability fixes.
- patch from Doug Hogan for SSL_OP_NO_SSLvx options, for the new
defaults in the ssl libraries.
- updated contrib/nsd.spec, with new configure options.
- Allocate less memory for TSIG digest.
- Fix #721: Fix wrong error code (FORMERR) returned for unknown
opcode. NOTIMP expected.
- Fix zonec ttl mismatch printout to include more information.
- Fix TCP responses when REUSEPORT is in use by turning it off.
- Document default in manpage for rrl-slip, ip4 and 6 prefixlength.
- Explain rrl-slip better in documentation.
- Document that ratelimit qps and slip are updated in reconfig.
- Fix up defaults in manpage.
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=========
BUG FIXES:
- Fix #701: Fix that AD=1 set in a BADVERS response.
- Fix typo in zonec.c inside error message.
- Fix #711: Document that debug-mode yes is used for staying
attached to the supervisor console.
- Document verbosity 3 prints more information.
- nsd-checkconf warns for master zones with no zonefile statement.
- Fix start failure when many file descriptors are in use.
- The servfail rcode is not printed with a space in the middle.
- print failed token for config syntax error or parse error.
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=========
BUG FIXES:
- Fix #706: default port 53 not opened on ip4 because of getaddrinfo
hints initialisation failure.
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=========
FEATURES:
- RFC7553 RR Type URI support.
- removed hardcoded interface limit, --with-max-ips removed.
- SO_REUSEPORT support, by default on Linux, or with reuseport: yes.
- Admitted axfrs are logged at verbosity 1. Refused at verbosity 2.
- --enable-pie and --enable-relro-now options for a safer executable.
BUG FIXES:
- Fix NSID response for short edns sizes.
- Fix that for expired zones NSD performs an AXFR and accepts newer
and older serial numbers.
- Document that minimal responses only minimizes responses to fit
in one datagram. It does not minimize smaller responses.
- Fix #618: documented need to list ip-addresses seperately in
nsd.conf if there are multiple, because the source address of
replies can otherwise go wrong.
- Fix that notify from nsd-control contains soa serial.
- Fix #698 formatting errors and typos in nsd.8.in.
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=========
FEATURES:
- nsd-control addzones and delzones read list of zones from stdin.
- hmac sha224, sha384 and sha512 support.
- max-interfaces raised to 32.
BUG FIXES:
- Fix #665: when removing subdomain, nsd does not reparse parent zone.
- Fix task and zonestat files to be stored in a subdirectory in tmp
to stop privilege elevation.
- Fix crash in zone parser for relative dname after error in origin.
- Fix that formerrors are ratelimited.
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=========
FEATURES:
- Incoming notifies have serial number logged (at verbosity 1).
BUG FIXES:
- Remove some duplicate header includes.
- Fix tcp waiting list for zone transfers where the bind and connect
calls fail.
- Fix segfault in zone reader on invalid input.
- Fix segfault on double origin in zone reader.
- Fix b64pton out of bounds error on invalid zonefile input.
- Fix origin directive from unused old value and subdomain parser
failure.
- Fix use after free after zonefile syntax error followed by ttl
or origin directive.
- Fix syntax error followed by too many TXT elements parse crash.
- Fix buffer overflow in config parse of domain name.
- Use reallocarray for integer overflow protection.
- Fix allocation integer overflow checks.
- Fix #654: Fix contradiction in notify logging verbosity level.
- Fix #655: Fix contradiction in verbosity for zone transfers.
- Made log message more consistent, changed 'axfr refused' log message
to be more consistent with other messages. Also notify refused.
- verbosity 2 logs axfr refused and notify refused.
verbosity 1 contains less log messages.
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================
FEATURES:
- RFC 7344: CDS and CDNSKEY (read record types).
- per zone statistics with --enable-zone-stats, config zone with
zonestats: "name", zones configured with the same string are added.
- Disabled use of SSLv3 in nsd-control.
- nsd-checkconf -f prints out full name of pidfile (with dir).
- Synthesize CNAMEs with same TTL as DNAME.
BUG FIXES:
- Fix that expired zones stay expired after a server restart.
- Fix "xfrd_handle_ipc: bad mode" log errors when compiled
with --disable-bind8-stats.
- Fix #616: retry xfer for zones with no content after command.
- Fix char used as array index warnings on NetBSD.
- Fix that queries for noname CH TXT are REFUSED instead of nodata.
- Fixes for wildcard addition and deletion, speedup for some cases.
- Fix that failure to add tcp to tcp base does not leak the socket.
- Patch nsd_munin_ from Philip Paeps to use type ABSOLUTE.
- Fix spinning NSD with lots of failing transfers, due to pointer
comparison using void pointer subtraction.
- Fix bug#637: fix that nsd.db grows limitlessly, an off by one
on one megabyte free chunks, created during AXFRs of large zones,
that caused the one megabyte chunk to be leaked.
- Fix casts for ctype functions.
- correct some hyphen-used-as-minus-sign (from Andreas Schulze) in
man pages.
- Fix zonesdir chroot error message.
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================
FEATURES:
- database: "" starts without mmap of database. Less memory is used,
zones are read from text zonefile.
- optimised zonefile parse code and zonefile write code.
- zonefiles-write option in nsd.conf, enabled when database is "".
The server writes changed zonefiles to disk every hour.
- xfrdfile: "" disables xfrd.state. If enabled, zones that are
same as before are not checked for a serial update at server start.
- include: "foo/nsd.d/*.conf" works, wildcard glob on includes.
- nsd shuts down during init process if given signal.
- log-time-ascii option, default yes, with readable timestamp in log.
- nsd-control addzone reports if zone already exists.
- Fix #564: add nsd-checkzone tool to check zonefile correctness.
- Increased default --with-max-ips from 8 to 16, this increases the
number of interfaces you can specify in nsd.conf to listen to.
BUG FIXES:
- Fixed shutdown message sporadically not printed on exit.
- Documented zonefile %s syntax in nsd.conf man page.
- Fix manpage to put colon after zonefiles check and write.
- Change from 'Zone" to "zone" with ".. serial .. is updated" log
message.
- Changed maxbackoff for no-content secondary zones from 4h to 24h.
- Fix print filename of encompassing config file on read failure.
- Fix delete or rename of a lot of zones and make it take a
non-enormous time.
- Speed up deletion of zone contents a lot, (56s to 1s), speeds up
delete, rename and AXFR for zones.
- Fix #571: unused variable and incompatible pointer warnings when
compiled on a system without INET6.
- Fix write_socket return value check in server.c
- Fix that xfrd reaps children also if the signal is lost.
- Fix #577: makefile incorrectly installed manpages from srcdir.
- Fix #587: Default value for statistics is 0.
- Fix #553: Improve TXT parsing.
- Fix #590: rrl log does not print wildcard as a star but escaped.
- Fix #591: rrl log messages at verbosity level 1.
- fix strptime implicit declaration error on OpenBSD.
- Fix -O3 compile flag to -O2 to avoid miscompilations.
- Allow user to override the -g -O2 CFLAGS in ./configure.
- Fix endian.h include for OpenBSD.
- Fix #600: document that provide-xfr provides AXFR and not IXFR.
- Fix rising-load-average or memory-leaks in OSes (Linux since 2.6),
that keep track of all past process parents, or leak memory
for them. Fix makes it so there is no very deep string of
process parents.
- Remove .LP after .SH in man pages.
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Bug Fixes:
- Fix nsd.db unclean close check. Previous databases are considered
unclean by the code and are created anew.
- Adds nsd.db larger than 400Tb check for sanity. Also test if
filesize as documented in the file is correct.
- nsd waits for tasks to complete on stop, prevents nsd.db corruption.
- fix to not delete tmpdir too early in shutdown process.
- disabled udb checking functionality that made it very slow,
this was enabled when enable-checking was turned on.
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Features:
* Return REFUSED for queries to non-hosted zones.
Bug Fixes:
* Fix expired zones to give SERVFAIL, also when parent zone loaded.
* documented nsd-control zonestatus output in nsd-control manpage.
* remove mention of nsdc from nsd-checkconf manpage.
* Disabled recvmmsg and sendmmsg usage by default because kernel
versions have implementation issues: ipv6 ignored, security issues.
* Detect libevent2 install automatically by configure, and use
event2 header files if necessary.
* Fix #551: change Regent to Copyright holder in the LICENSE,
to match the definition on opensource.org for the BSD License.
* Fix #552: zonefile loads on nsd-control reconfig when the name
of the file has changed.
* Fix leak of zone name after zonefile read and fix malloc too
large that would be leaked in the radix tree.
* Fix from 3.2: make SOA RDATA comparisons in XFR more lenient (only
check serial).
* Fix that NSD will delete and recreate not-clean-closed databases.
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These are now handled dynamically if INIT_SYSTEM is set to "rc.d", or
ignored otherwise.
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Features:
* recognizes ip-address and interface as synonyms for convenience.
* Support for EUI48 and EUI64 RR types enabled by default (RFC 7043).
* Support for CAA RRtype (RFC 6844).
* NSID can be set with "ascii_somestring" in ascii.
Bug fixes:
* Fix xfrd when zone transfer TCP contains zero length packets.
* Fix for NSEC3 zones where parent zone is co-hosted, also NSEC3,
because AXFRs overwrote nsec3 administration in the child zone.
* Fix that bad IXFR updates do not result in double SOA records,
and that an AXFR is started (attempted) when the zone state seems
to be inconsistent with the master's zone state.
* Log ip address for sendto and sendmmsg failures.
* Fix segfaults after read of zones with rr type WKS from zonefile.
* Seed PRNG for openssl at start of daemon, fixes SSL connection issue.
* Bugfix #534: IXFR query loop over UDP for zones that are unchanged.
* (same as in 3.2.16): fix wildcard cname to nxdomain repeated rrset.
* (same as in 3.2.16): Bugfix #542: Match RRSIG TTL with SOA TTL in
negative response.
* Check if configure in srcdir collides with outofdir build.
* Fix #546: output format errors in nsd_munin_ (Thanks Tom Hendrikx).
* Fix printout of high-chars in TXT on NetBSD.
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Features:
* documented in doc/NSD-4-features. Change configuration without restart,
direct nameserver control with nsd-control, support a higher number of zones.
Higher performance (compared to NSD3).
* nsdc is gone. Use kill -HUP for reload (also checks if zonefiles have
changed and rereads them), and kill -TERM for quit. Or use nsd-control
for detailed control.
* cron job for nsdc patch is gone. nsd-control write creates zonefiles.
* nsd.db has a new format that compacts itself when it is changed,
thus nsdc patch is no longer necessary.
* nsd.db is memory mapped, NSD needs (part of) that mmap in ram.
* tcp-count can go above 1000; epoll/kqueue support with libevent.
* nsd-control reconfig for updates with no restart (zones, keys, ..)
* nsd-control-setup to create keys for nsd-control (enable nsd-control
with remote-control: yes in nsd.conf).
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Features:
* New config option "ip-transparent:" to allow NSD to bind to non local
addresses. Default no.
* Use IPV6 minimum MTU settings with TCP to reduce failures that are caused
by delays in learning working PMTU when communicating through a tunnel.
* Bugfix #496: Support for EUI48 and EUI64 RR types. Experimental,
turned off by default. Enable with --enable-draft-rrtypes.
* New config option "rrl-slip:" to set the average number of packets
discarded before we send back a truncated response.
* New config option "rrl-ipv4-prefix-length:" and "rrl-ipv6-prefix-length:"
to set the prefix lengths.
* Improved RRL logging, also print triggering query src address and QTYPE.
* Provide RRL documentation in nsd.conf.sample.
Bugfixes:
* Bugfix #357: Parent process waits until children closed down sockets,
to prevent NSD failing to bind to sockets when restarting.
* Bugfix #487: lookup3.c determine endianness for BSD systems.
* Bugfix #491: pick program name (0th argument) as syslog identity.
* Bugfix #494: Exit with return code 1 if socket code fails.
* Bugfix #495: Wrong bufsize in dname_to_string for root.
* Fix outgoing-interface: Don't fail if family is IPv6 but only IPv4
outgoing-interface is set, or vice versa.
* RRtypes ASFDB, RP, RT should not compress dnames.
* Check that zone directory is within chroot directory.
* Better XFR checking, fallback to AXFR (if allowed) if three malformed
XFR packets have been seen.
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sysutils/user_* packages.
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Features:
* Support for ILNP RR types: NID, L32, L64, LP (RFC6742).
* RRL, --enable-ratelimit at configure time and config options.
* TSIG initialization only fails when there is no digest found at all.
Bugfixes:
* Bugfix #478: Declaration after statement (for gcc 2.95).
* Bugfix #483: Better error message in case of TSIG error.
* Bugfix #485: TTL should not be greater than 2^31 - 1.
* Fix RCODE when CNAME loop final answer does not exist, should
return NXDOMAIN as stated by RFC 6604.
* Fix --disable-full-prehash bug, where after multiple incoming
IXFRs, NSEC3 can be removed unjustified.
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Features:
* TCP writev support.
Bugfixes:
* Fix build on OpenBSD (thanks Oliver Peter).
* Prioritize notify sender for requesting XFR (thanks Ilya dBakulin).
* Fix crash in zonec if TXT string too long (thanks Ilya Bakulin).
* tzset before chroot for correct timezone (thanks Camiel Dobbelaar).
* Fix --disable-full-prehash bug when nsdc patch happens while ixfr too,
it did not rehash the new database.
* Bugfix #464: Conditionally define MAXHOSTNAMELEN.
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Bugfixes:
* Bugfix #461 (VU#517036 CVE-2012-2979): NSD denial of service vulnerability
from DNS packet when using --enable-zone-stats.
* Bugfix #460: man page correction - identity.
* Fix for nsd-patch segfault if zone has been removed from nsd.conf
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NSD 3.2.12
Bugfixes
Fix for VU#624931 CVE-2012-2978: NSD denial of service
vulnerability from non-standard DNS packet from any host on
the internet.
NSD 3.2.11
Features
Fallback to AXFR if IXFR is unknown at the primary. NSD considers
IXFR unknown at the primary if there is a negative response
for the IXFR RRtype. This does not override the value for
'allow-axfr-fallback'.
Allow for reading in new DNSKEY algorithm mnemonics (RFC5155,
RFC5702, RFC5933, and RFC6605 (ECDSA)).
Zone statistics, enable with --enable-zone-stats. This stores
the BIND8 stats per zone in a configurable statistics file.
This option does not scale and should therefore not be enabled
when serving many zones.
Support for TLSA RRtype (DANE).
Bugfixes
Fix for qtype ANY for a wildcard domain in NSEC signed zone:
Don't add the wildcard domain NSEC into the answer section.
Instead, put the wildcard expanded NSEC into the answer section
and keep the wildcard domain NSEC in the authority section.
Fix for accept spinning reported by OpenBSD.
Fix restart failed due to bad ixfr packet because of zone
removed from nsd.conf.
Bugfix #453: typo in nsdc man page.
Operational notes
NSD uses the query name for dname compression again (Fix #235
had as side effect that this didn't happen anymore and is hereby
undone).
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Bugfixes:
* Bugfix #421: Truncate pidfile on shutdown, before unlink.
* Bugfix #423: Fix slow zone transfer processing due to
'Fix is_existing flag for ENT' bugfix.
* Bugfix #430: Fix segfault when MAX_INTERFACES set to more than 65K.
* Fix configure.ac strptime check for gcc 4.6.2, acx_nlnetlabs.m4 update
NSD 3.2.9
Features:
* Minimize responses to reduce truncation: NSD will only add optional
records to the authority and additional sections when the response size
does not exceed the minimal response size.
* The minimal response size is 512 (no-EDNS), 1480 (EDNS/IPv4),
1220 (EDNS/IPv6), or the advertized EDNS buffer size if that is smaller
than the EDNS default.
* The feature is enabled by default. You can disable it by configuring NSD
with --disable-minimal-responses.
* Less NSEC3 prehashing. This will make NSD handle zone transfers faster,
but will decrease the performance of NXDOMAIN and wildcard NODATA responses.
Full prehashing is enabled by default. If you want less NSEC3 prehashing,
configure NSD with --disable-full-prehash. Thanks Secure64 for the patch.
Bugfixes:
* Bugfix #302: nsd accepts XFR but refuses to re-read the slave zone.
* Bugfix #365: set patch style and zonec verbose for nsdc.
* First step of bug #369: RRSIG DNSKEY sets zone to be treated DNSSEC.
* Bugfix #375: typos in nsd.conf.5.
* Bugfix #381: Binary escaped and transfers.
* Bugfix #397: Don't allow relative domain names as origin in $INCLUDE
directives.
* Fix printout of IPSECKEY by nsd-patch.
* Fix is_existing flag for ENT when domain that has a shared ENT is deleted
by IXFR. (ENT == Empty Non-Terminal)
* Fix bug if the zonefile is changed for a secondary but stored transfers
are applied, and stop it from applying ixfr to empty zone. The zone is
flagged with error and AXFR-ed.
* Fix to have no authority NS set processing for CNAMEs.
* Fix nsd-checkconf to check tsig algorithms properly.
* Set the AA bit on responses that have an authoritative CNAME.
* Fix denial of existence response for empty non-terminal that looks like
a NSEC3-only domain (but has data below it).
Operational notes:
nsd.db version number increased because NSD 3.2.7 and earlier zonec is not
compatible due to the TXT strings change. Please run nsdc rebuild before
running NSD 3.2.9 and later versions.
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Bugfixes:
* Do setusercontext before chroot, otherwise login.conf etc. are required inside chroot.
* Bugfix #216: Fix leak of compressiontable when the domain table increases in size.
* Bugfix #348: Don't include header/library path if OpenSSL is in /usr.
* Bugfix #350: Refused notifies should log client ip.
* Bugfix #352: Fix hard coded paths in man pages.
* Bugfix #354: The realclean target deletes a bit too much.
* Bugfix #357, make xfrd quit with many zones.
* Bugfix #362: outgoing-interface and v4 vs. v6 leads to spurious warning messages.
* Bugfix #363: nsd-checkconf -v does not print outgoing-interface ok.
* Bugfix: nsd-checkconf -o outgoing-interface omits NOKEY.
* Undo Bugfix #235: Don't skip dname compression, messes up packets that do need compression.
Operational notes:
* Use 'make clean' to clean up files that make created.
* Use 'make realclean' to also clean up files that were generated by running ./configure.
* Use 'make devclean' to also clean up autoconf, autoheader files.
NSD 3.2.7:
Bugfixes:
* Bugfix #253: Don't put NS RRs in a response with QTYPE=DS.
* Bugfix #320: use arcrandom(4) for QID generation if available.
* Bugfix #328: nsd-checkconf overrun.
* Bugfix #343: nsdc update fix.
* Bugfix #347: Wrong NSEC3 returned for nodata response QTYPE=DS no delegation.
* Bugfix: Allow for huge amount of strings in TXT (and other) records.
* Bugfix: nsdc can now deal with tsig algorithms other than hmac-md5.
* Fixed several parts in the documentation, including #306, #345.
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Features:
* Expand command line option '-a' and config option 'ip-address:' with port number.
Bugfixes:
* Bugfix #314: correctly print NSEC next field, escape spaces and fix label overflows.
Operational notes:
* Configure options --disable-dnssec, --disable-nsid, --disable-tsig are removed
* Configure option --max-interfaces is renamed to --max-ips
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Features:
* New option 'nsid:', to specify the NSID (Bugfix #298).
* The default chroot can be set with --with-chroot=dir.
If not set, by default chroot will not be used.
* Optimized zonec and b64_pton compatibility code.
* Optimized memory allocations. Use mmap/munmap instead of malloc/free.
Experimental, by default off. Enable it at build time with --enable-mmap.
Bugfixes:
* NSD will not start if chroot is configured,
but changing root is not possible
* Make use of the more secure strl* functions.
* Bugfix #303: spelling error.
Operational notes:
* NSID support is now enabled by default.
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* Support DLV records.
* New option 'tcp-query-count:', to limit the maximum number of DNS
queries on a single tcp connection.
* New option 'tcp-timeout:', to override the default tcp timeout.
The option can also be set at build time, --with-tcp-timeout.
* New option 'notify-retry:', to configure how many times NSD should
retry a NOTIFY message.
* New options 'ipv4-edns-size:' and 'ipv6-edns-size:', to set your
preferred EDNS buffer size.
* Ignore SIGHUP to child processes.
* UDP/IPv4 sockets have new options set that will disable the DF
flag in IP packets.
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* Bug #236: Allow RRs before the SOA in a zonefile.
* Bug #229: Remove the C99 code.
* Bug #253: Don't put NS RRs in a response with QTYPE=DNSKEY.
* Bug #263: Make TSIG algorithm comparison case insensitive.
* Bug #266: Build failed on systems without strptime.
* Fix install hickup.
* Fix to use 4096 EDNS limit for IPv6 on Linux.
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Issue raised by Koh-ichi Ito on nsd-users.
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Allows nsd-patch to directly work on the database without intermediate
zonefile. Allow file rotation for nsd.log. Allow disabling AXFR
fallback.
Fix off-by-one during query processing.
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- improved IXFR support
- support for hmac-sha1 and hmac-sha256 in TSIG
- selection of source ip for notifies and zone requests
- NSEC3 is enabled by default
- option to disable CHAOS version support
- bugfixes
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- better logging for nsd-notify and db creation failures
- nsdc start checks if nsd is already running
- fix loading data from files with relative names when chrootdir ends
with a slash
- fix a case when nsd would return FORMERR for edns queries with version
0 and rdlen larger than 0.
- don't answer nsec3 wildcard information when DO bit is not set
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