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Knot DNS 2.1.0-dev (TBD)
========================

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Knot DNS 2.0.2 (2015-11-24)
===========================

Bugfixes:
---------
 - Out-of-bound read in packet parser for malformed NAPTR records (LibFuzzer)

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Knot DNS 2.0.1 (2015-09-02)
===========================
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Bugfixes:
---------
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 - Do not reload expired zones on 'knotc reload' and server startup
 - Fix rare race-condition in event scheduling causing delayed event execution
 - Fix skipping of non-authoritative nodes in NSEC proofs
 - Fix TC flag setting in RRL slipped answers
 - Disable domain name compression for root label
 - Log via journald only when running under systemd
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 - Fix CNAME following when quering for NSEC RR type
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 - Fix refreshing of DNSSEC signatures for zone keys
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 - Fix binding an unavailable IPv6 address on Linux (IP_FREEBIND)
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 - Fix infinite loop in knotc zonestatus and memstats
 - Fix memory leak in configuration on server shutdown
 - Fix broken dnsproxy module
 - Fix DNSSEC KASP timestamps parsing in strict POSIX environment
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 - Fix multi value parsing on big-endian
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 - Adapt to Nettle 3 API break causing base64 decoding failures on big-endian
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Features:
---------
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 - Add 'keymgr zone key ds' to show key's DS record
 - Add 'keymgr tsig generate' to generate TSIG keys
 - Add query module scoping to process either all queries or zone queries only
 - Add support for file name globbing in config file includes
 - Add 'request-edns-option' config option to add custom EDNS0 option into
   server initiated queries
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Improvements:
-------------
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 - Send minimal responses (remove NS from Authority section for NOERROR)
 - Update persistent timers only on shutdown for better performance
 - Allow change of RR TTL over DDNS
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 - Documentation fixes, updates, and improvements in formatting
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 - Install yparser and zscanner header files
 - Improve lookup of libsystemd build dependencies
 - Fix compilation warnings in endian conversion functions on OpenBSD
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Knot DNS 2.0.0 (2015-06-26)
===========================
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Bugfixes:
---------
 - Fix lost NOTIFY message if received during zone transfer
 - Disable fast zone parser when compiled in Clang (workaround for Clang bug)
 - kdig: Record correct dnstap SocketProtocol when retrying over TCP
 - kdig: Hide TSIG section with +noall
 - Do not set AA flag for AXFR/IXFR queries
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Features:
---------
 - DNSSEC: separate library, switch to GnuTLS, new utilities
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 - DNSSEC: basic KASP support (generate initial keys, ZSK rollover)
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 - Configuration: New text format in YAML, binary store in LMDB
 - Zone parser: Split long TXT/SPF strings into multiple strings
 - kdig: Add generic dump style option (+generic)
 - Try all master servers in multi-master environment
 - Improved remotes and ACLs (multiple addresses, multiple keys)
 - Basic support for zone file patterns (%s to substitute zone name)
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 - Disable zone file synchronization by setting 'zonefile_sync' to '-1'
 - knsupdate: Add input prompt in interactive mode and 'quit' command
 - knsupdate: Allow TSIG algorithm specification in interactive prompt
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Improvements:
-------------
 - Zone dump: Do not write class for SOA record (unified with other RR types)
 - Zone dump: Do not write master server address into the zone file
 - Documentation: Manual pages are included in HTML and PDF
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Knot DNS 1.6.3 (2015-04-08)
===========================

Bugfixes:
---------
 - Performance drop for NSEC-signed zones
 - Proper handling of TCP short-writes
 - Out-of-bound read in zone parser for long domain names in origin (AFL fuzzer)
 - Out-of-bound read in packet parser for TSIG RR without RDATA (AFL fuzzer)
 - Out-of-bound read in packet parser for malformed NAPTR RR (AFL fuzzer)

Features:
--------
 - CDS and CDNSKEY support in zone parser

Improvements:
-------------
 - Add defaults for TCP config options into documentation
 - Detailed error message if zone reload fails

Knot DNS 1.6.2 (2015-02-19)
===========================

Features:
---------
 - Limiting number of parallel TCP clients (max-tcp-clients config option)

Bugfixes:
---------
 - Ignore refresh and transfer events on non-slave zones
 - Compilation with Dnstap support on FreeBSD
 - Possible file descriptor leak when terminating inactive TCP clients

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Knot DNS 1.6.1 (2014-12-13)
===========================

Bugfixes:
---------
 - Journal file would sometimes outgrow its limit (ixfr-fslimit in configuration)
 - Fixed incompatibility with OpenSSL 0.9.8
 - Proper handling when hostname cannot be retreived (for NSID and CH)

Features:
---------
 - DNSSEC Single Type Signing Scheme is now supported

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Knot DNS 1.6.0 (2014-10-23)
===========================

Bugfixes:
---------
 - Fix zone expiration when AXFR/IXFR is being refused by master
 - Fix forced zone refresh on slave (knotc refresh -f)

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Knot DNS 1.6.0-rc2 (2014-10-17)
===============================

Improvements:
-------------
 - Maximal size of persistent timers database increased from 10 MB to 100 MB
 - Added logging of persistent timers database errors

Bugfixes:
---------
 - Persistent timers database opening after privileges has been dropped

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Knot DNS 1.6.0-rc1 (2014-10-13)
===============================

Features:
---------
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 - Persistent timers for slave zones (expire, refresh, and flush)
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Bugfixes:
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---------
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 - DNSSEC: RFC compliant processing of letter case in RDATA domain names
 - EDNS: Return minimal error response for queries with unsupported version
 - EDNS: Fix interpretation of Extended RCODE
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Knot DNS 1.5.3 (2014-09-15)
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===========================
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Bugfixes:
---------
 - Some specific incoming IXFRs were causing server to crash
 - Rare sychronization error during reload caused read-after-free
 - Response synthetization module did not work properly with DNSSEC-enabled zones
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 - When Knot sent AXFR when IXFR was requested, message ID and opcode were wrong
 - Knot failed to send large messages to remote control (present since 1.5.1)
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Knot DNS 1.5.2 (2014-09-08)
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===========================
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Bugfixes:
---------
 - Some RR parsing corner cases were not handled properly
 - AXFR-style IXFR was refused and had to be retransfered
 - Hash character (#) was not properly escaped when storing text zone file

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Knot DNS 1.5.1 (2014-08-19)
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===========================
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Features:
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---------
 - Basic support for logging using systemd journal
 - DDNS: Ability to process updates in bulk
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Improvements:
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-------------
 - Unified logging messages structure
 - DNSSEC: More strict controls for signing keys
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Bugfixes:
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---------
 - DNSSEC: DNAMEs in RDATA were not lowercased before signing
 - EDNS: OPT RR were not put into responsing for some errors
 - TSIG: DDNS responses were not signed with TSIG
 - DDNS: Prerequisite checks failed for some inputs
 - knsupdate: Zone origin was not used for deletions
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Knot DNS 1.5.0 (2014-07-08)
===========================
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Features:
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---------
 - DDNS forwarding reimplemented
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Improvements:
-------------
 - Transfer sizes logged in bytes if needed
 - Logging outgoing NOTIFY messages
 - Logging unauthorized incoming NOTIFYs
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Bugfixes:
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---------
 - Zone flush planning after bootstrap
 - Incorrect incoming AXFR message sizes
 - DDNS signing changes were freed too soon, posibility of stale data
 - knotc remote control key handling
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Knot DNS 1.5.0-rc2 (2014-06-18)
===============================
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Features:
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---------
 - edns-client-subnet support in kdig
 - Optional asynchronous startup (config "asynchronous-start")
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Improvements:
-------------
 - Preempt task queue for faster reload
 - Lazy zone file write after zone transfer (governed by
   "zonefile-sync")
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Bugfixes:
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---------
 - Close zone transfer after SERVFAIL response
 - Incremental to full zone transfer fallback, wrong log message
 - Zone events corner cases, reload replanning
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Knot DNS 1.5.0-rc1 (2014-06-03)
===============================
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Features:
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---------
 - Pluggable query processing modules
 - Synthetic IPv4/IPv6 reverse/forward records (optional module)
 - dnstap support in both utilities & server (optional module)
 - NOTIFY message support and new TSIG section in kdig
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 - Zone transfer master failover
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Improvements:
-------------
 - Query processing and core functionality overhaul
 - Performance and reduced memory footprint
 - Faster zone events scheduling
 - RFC compliant queries/responses in some corner cases
 - Log messages
 - New documentation (Sphinx)
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Knot DNS 1.4.2 (2014-01-27)
===========================
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Bugfixes:
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---------
 - AXFR/IXFR compatibility issues with tinydns/axfrdns
 - Journal file is created only when needed
 - Zone-related log messages are logged into correct category
 - DNSSEC: Refresh signatures earlier (3 days before their expiration
    with the default signature lifetime)
 - Fixed RCU synchronization causing deadlock on 'knotc signzone'
 - RRSIG not fitting in the additional records doesn't cause
   truncation
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Knot DNS 1.4.1 (2014-01-13)
===========================
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Bugfixes:
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---------
 - Empty APL record support
 - 'zonestatus' when using immediate zone syncing
 - Immediate zone syncing after reload
 - Race condition writing time values to zone file
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Knot DNS 1.4.0 (2014-01-06)
===========================
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Features:
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---------
 - Zone SERIAL policies (INCREMENT, UNIXTIME)
 - IDN support in Knot utilities
 - DNSSEC: support for GOST algorithm
 - Better logging of automatic DNSSEC events
 - Support for DNSSEC key pre-publication
 - Experimental automatic DNSSEC signing
 - Reduced memory usage
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Improvements:
-------------
 - ./configure prints build configuration summary
 - Pretty zone file output (DNSSEC-related data separately)
 - Lower memory consumption
 - config: option 'dnssec-keydir' can be set per zone
 - config: option 'storage' can be set per zone

Bugfixes:
---------
 - AXFR crash with specific packet
 - QNAME case-sensitive since 1.4.0-rc0
 - DNSSEC records over DDNS
 - Semantic check fail in AXFR is only soft-error
 - Journal race condition
 - Notifies are sent immediately
 - Crash in particular additionals processing
 - Race condition in event cancelation
 - Journal corruption after failed transactions
 - DNSSEC: fixed detection of ECDSA support
 - Refactored zone loading
 - Improved journal locking and fixed some race conditions
 - Various fixes in client utilities
 - Fixed memory errors in automatic DNSSEC signing
 - 'dnssec-keydir' doesn't auto-enable signing
 - Fixed rescheduling of zone resigns

Knot DNS 1.3.3 (2013-10-28)
===========================

Bugfixes:
---------
 - Improved zone loading error messages
 - Correct control socket permissions
 - Improved log syntax documentation
 - Fixed wrong assertions in DDNS prerequisites checking
 - Fixed processing of some malformed DNS packets
 - Fixed notify messages being ignored in some cases

Knot DNS 1.3.2 (2013-09-30)
===========================

Bugfixes:
---------
 - Configuration option for EDNS0 max UDP payload.
 - Max UDP payload from EDNS0 affected TCP responses.
 - Fixed build on SLE 10.
 - knotc reload did not close files included from config.

Knot DNS 1.3.1 (2013-08-26)
===========================

Bugfixes:
---------
 - Response with NSID contained extra bytes after reload
 - List of remotes is scanned for longest prefix match
 - Multipacket TSIG signatures for transfers
 - Wrongly parsed TSIG key secret without quotes
 - Removed autoconf checks for extended instruction sets

Knot DNS 1.3.0 (2013-08-05)
===========================
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Features:
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---------
 - Defaults for CH TXT id.server,version.server (see doc)
 - Much faster bootstrap of many zones
 - --with-configdir option for default config path
 - Reintroducted 'pidfile' config option
 - Utility to estimate memory consumption (see 'knotc memstats')
 - PID file is not created when running on foreground
 - UNIX sockets support for knotc
 - Configurable 'rundir' and 'storage'
 - Faster zone parser
 - Full support for EUI and ILNP resource records
 - Lower memory footprint for large zones
 - No compilation of zones
 - Improved scheduling of zone transfers
 - Logging of serials and timing information for zone transfers
 - Config: 'groups' keyword allowing to create groups of remotes
 - Config: 'include' keyword allowing other file includes
 - Client utilities: kdig, khost, knsupdate
 - Server identification using TXT/CH queries (RFC 4892)
 - Improved build scripts
 - Improved dname compression and performance

Bugfixes:
---------
 - Progressive interval for bootstrap retry
 - Transfers randomly cancelled
 - Disabling RRL on reload
 - Secondary groups not initialized when dropping privileges
 - Responding to DS queries for names at or below delegation points
 - Removed deprecated 'knotc -w' option
 - Slave ignores out-of-zone records in zone
 - Support for obsolete types in zone transfers
 - Slave zone file names fixes
 - Long transfers being randomly dropped
 - AXFR/IXFR subsystem performance improvements
 - Rescheduling of AXFR in some cases
 - RRSIGs not in the same section for DS records
 - Log messages leaking to syslog
 - 'knotc restart' option removed due to several limitations
 - IXFR with an arbitrary number of diffs
 - Processing of knotc TSIG keyfile
 - Atomic PID file writing, removed deprecated 'knotc start'
 - Performance regression when RRSIGs came before covered RRs in AXFR
 - Label compression related bug
 - Proper resolution of some CNAME chains
 - Unstable response rate in rare cases
 - Several log messages
 - Fixed creating of PID file when dropping privileges

Knot DNS 1.2.0 (2013-03-29)
===========================
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Features:
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---------
 - knotc 'zonestatus' command
 - Response rate limiting (see documentation)
 - Dynamic updates, including forwarding (limited on signed zones)
 - Updated remote control utility
 - Configurable TCP timeouts
 - LOC RR support

Bugfixes:
---------
 - Memory leaks
 - Check for broken recvmmsg() implementation
 - Changing logfile ownership before dropping privileges
 - knotc respects 'control' section from configuration
 - RRL: resolved bucket collisions
 - RRL: updated bucket mapping to conform RRL technical memo
 - Fixed OpenBSD build
 - Responses to ANY should contain RRSIGs
 - Fixed processing of some non-standard dnames.
 - Correct checking of label length bounds in some cases.
 - More compliant rcodes in case of DDNS/TSIG failures.
 - Correct processing of malformed DDNS prereq section.

Knot DNS 1.1.3 (2012-12-19)
===========================

Bugfixes:
---------
 - Updated manpage.
 - Fixed answering DS queries (RRSIGs not together with DS, AA bit
    missing).
 - Fixed setting ARCOUNT in some error responses with EDNS enabled.
 - Fixed crash when compiling zone zone with NSEC3PARAM but no NSEC3
    and semantic checks enabled.

Knot DNS 1.1.2 (2012-11-21)
===========================

Bugfixes:
---------
 - Fixed debug message.
 - Fixed crash on reload when config contained duplicate zones.
 - Fixed scheduling of transfers.

Knot DNS 1.1.1 (2012-10-31)
===========================
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Features:
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---------
 - Improved compression of packets. Out-of-zone dnames present in
    RDATA were not compressed.
 - Slave zones are now automatically refreshed after startup.
 - Proper response to IXFR/UDP query (returns SOA in Authority
   section).

Bugfixes:
---------
 - Fixed assertion failing when asking directly for a wildcard name.
 - Crash after IXFR in certain cases when adding RRSIG in an IXFR.
 - Fixed behaviour when incoming IXFR removes a zone cut. Previously
    occluded names now become properly visible. Previously lead to a
    crash when the server was asked for the previously occluded name.
 - Fixed handling of zero-length strings in text zone dump. Caused the
    compilation to fail.
 - Fixed TSIG algorithm name comparison - the names should be in
    canonical form.
 - Fixed handling unknown RR types with type less than 251.

Knot DNS 1.1.0 (2012-08-31)
===========================
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Features:
---------
 - Signing SOA with TSIG queries when checking zone version with
   master.
 - Optionally disable ANY queries for authoritative answers.
 - Dropping identical records in zone and incoming transfers.
 - Support for '/' in zone names.
 - Generating journal from reloaded zone (EXPERIMENTAL).
 - Outgoing-only interfaces in configuration file.
 - Following DNAME if the synthetized name is in the same zone.

Bugfixes:
---------
 - Syncing journal to zone was not updating the compiled zone
   database.
 - Fixed ixfr-from-differences journal generation in case of IPSECKEY
    and APL records.
 - Fixed possible leak on server shutdown with a pending transfer.
 - Crash when zone contained RRSIG signing a CNAME, but did not
    contain the CNAME.
 - Malformed packets parsing.
 - Failed IXFR caused memory leaks.
 - Failed IXFR might have resulted in inconsistent zone structures.
 - Fixed answering to +dnssec queries when NSEC3 chain is corrupted.
 - Fixed answering when transitioning from NSEC3 to NSEC.
 - Fixed answering when zone contains multiple NSEC3 chains.
 - Handling RRSets with different TTLs - TTL from the first RR is
   used.
 - Synchronization of zone reload and zone transfers.
 - Fixed build on NetBSD 5 and FreeBSD.
 - Fixed binding to both IPv4 and IPv6 at the same time on special
    interfaces.
 - Fixed access rights of created files.
 - Semantic checks corrupted RDATA domain names which are covered by
    wildcard in the same zone.
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Improvements:
-------------
 - Improved user manual.
 - Better checks of corrupted zone database.
 - IXFR-in optimized.
 - Many zones loading optimized.
 - More detailed log messages (mostly transfer-related).
 - Copying Question section to error responses.
 - Using zone name from config file as default origin in zone file.
 - Additional records are now added to response also from
    wildcard-covered names.
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Knot DNS 1.0.6 (2012-06-13)
===========================
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Bugfixes:
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---------
 - Fixed potential problems with RCU synchronization.
 - Adding NSEC/NSEC3 for all wildcard CNAMEs in the response.
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Knot DNS 1.0.5 (2012-05-17)
===========================
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Bugfixes:
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---------
 - Fixed bug with creating journal files.
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Knot DNS 1.0.4 (2012-05-16)
===========================
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Features:
---------
 - Parallel loading of zones to the server.
 - RFC3339-complaint format of log time.
 - Support for TLSA (RR type 52).
 - knotc checkzone (as a dry-run of zone compile).
 - knotc refresh for forcing Knot to update all zones from master
    servers.
 - Reopening log files upon start (used to truncate them).
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Improvements:
-------------
 - Significantly sped up IXFR-in and reduced its memory requirements.
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Bugfixes:
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---------
 - Copying OPCODE and RD bit from query to NOTIMPL responses.
 - Corrected response to CNAME queries if the canonical name was also
    an alias (was adding the whole CNAME chain to the response).
 - Fixed crash when NS or MX points to an alias.
 - Fixed problem with early closing of filedescriptors (lead to crash
    when compiling and loading or bootstrapping and restarting the
    server with a lot of zones).
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===========================
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Bugfixes:
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 - Corrected handling of EDNS0 when TCP is used (was applying the UDP
   size limit).
 - Fixed slow compilation of zones.
 - Fixed potential crash with many concurrent transfers.
 - Fixed missing include for FreeBSD.
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Knot DNS 1.0.2 (2012-04-13)
===========================
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Features:
---------
 - Configuration checker (invoked via knotc).
 - Specifying source interface for transfers and NOTIFY requests
   directly.
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Bugfixes:
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---------
 - Fixed leak when querying non-existing name and zone SOA TTL >
   minimal.
 - Fixed some minor bugs in tansfers.
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Improvements:
-------------
 - Improved log messages (added date and time, better specification of
   XFR remote).
 - Improved saving incoming IXFR to journal (memory optimized).
 - Now using system scheduler (better for Linux).
 - Decreased thread stack size.
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Knot DNS 1.0.1 (2012-05-09)
===========================
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Features:
---------
 - Implemented jitter to REFRESH/RETRY timers.
 - Implemented magic bytes for journal.
 - Improved error messages.
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Bugfixes:
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 - Problem with creating IXFR journal for bootstrapped zone.
 - Race condition in processing NOTIFY/SOA queries.
 - Leak when reloading zone with NSEC3.
 - Processing of APL RR.
 - TSIG improper assignment of algorithm type.
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Knot DNS 1.0.0 (2012-02-29)
===========================
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Features:
---------
 - Support for subnets in ACL.
 - Debug messages enabling in configure.
 - Optimized memory consuption of zone structures.
 - NSID support (RFC5001).
 - Root zone support.
 - Automatic zone compiling on server start.
 - Setting user to run Knot under in config file.
 - Dropping privileges after binding to port 53.
    + Support for Linux capabilities(7).
 - Setting source address of outgoing transfers in config file.
 - Custom PID file.
 - CNAME loop detection.
 - Timeout on TCP connections.
 - Basic defense against DoS attacks.

Bugfixes:
---------
 - Memory errors and leaks.
 - Fixed improper handling of failed IXFR/IN.
 - Several other minor bugfixes.
 - Fixed IXFR processing.
 - Patched URCU so that it compiles on architectures without TLS in
   compiler (NetBSD, OpenBSD).
 - Fixed response to DS query at parent zone.
 - A lot of other bugfixes.

Knot DNS 0.9.1 (2012-01-20)
===========================
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Features:
---------
 - RRSet rotation
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Improvements:
-------------
 - Replaced pseudo-random number generator by one with MIT/BSD
   license.
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Bugfixes:
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 - Fixed build on BSD.
 - Fixes in parsing and dumping of zone RR types IPSECKEY, WKS, DLV,
    APL, NSAP
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Knot DNS 0.9.0 (2012-01-13)
===========================
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Features:
---------
 - TSIG support in both client and server.
 - Use of sendmmsg() on Linux 3.0+ (improves performance).
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Bugfixes:
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---------
 - Knot was not accepting AXFR-style IXFR with first SOA in a separate
    packet (i.e. from Power DNS).
 - Wrong SOA TTL in negative answers.
 - Wrong max packet size for outgoing transfers (was causing the
    packets to be malformed).
 - Wrong handling of WKS record in zone compiler.
 - Problems with zone bootstrapping.
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Knot DNS 0.8.1 (2011-12-01)
===========================
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Bugfixes:
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 - Handling SPF record.
 - Wrong text dump of unknown records.
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Knot DNS 0.8.0 (2011-11-03)
===========================
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Features:
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 - First Public Release
 - AXFR-in/-out
 - IXFR-in/-out
 - EDNS0
 - DNSSEC
 - NSEC3
 - IPv6
 - Runtime reconfiguration
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Known issues:
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-------------
 - Missing support for TSIG
 - Root zone support
 - NSID support
 - Other DNS classes than IN
 - RRSet rotation not implmented
 - Dynamic update support
 - IXFR code might be flaky sometimes
 - IXFR may be slow when too much (10 000+) RRSets are transfered at
   once