d68c78b834
now out of support. The changes since our last version imported (9.10.7) version are too big to include inline here; please consult the CHANGES file in this directory.
543 lines
28 KiB
Markdown
543 lines
28 KiB
Markdown
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- See the COPYRIGHT file distributed with this work for additional
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- information regarding copyright ownership.
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### Functional enhancements from prior major releases of BIND 9
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#### BIND 9.11
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BIND 9.11.0 includes a number of changes from BIND 9.10 and earlier
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releases. New features include:
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- Added support for Catalog Zones, a new method for provisioning servers: a
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list of zones to be served is stored in a DNS zone, along with their
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configuration parameters. Changes to the catalog zone are propagated to
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slaves via normal AXFR/IXFR, whereupon the zones that are listed in it
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are automatically added, deleted or reconfigured.
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- Added support for "dnstap", a fast and flexible method of capturing and
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logging DNS traffic.
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- Added support for "dyndb", a new API for loading zone data from an
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external database, developed by Red Hat for the FreeIPA project.
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- "fetchlimit" quotas are now compiled in by default. These are for the
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use of recursive resolvers that are are under high query load for domains
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whose authoritative servers are nonresponsive or are experiencing a
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denial of service attack:
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- "fetches-per-server" limits the number of simultaneous queries that
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can be sent to any single authoritative server. The configured value
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is a starting point; it is automatically adjusted downward if the
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server is partially or completely non-responsive. The algorithm used
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to adjust the quota can be configured via the "fetch-quota-params"
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option.
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- "fetches-per-zone" limits the number of simultaneous queries that can
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be sent for names within a single domain. (Note: Unlike
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"fetches-per-server", this value is not self-tuning.)
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- New stats counters have been added to count queries spilled due to
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these quotas.
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- Added a new "dnssec-keymgr" key mainenance utility, which can generate or
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update keys as needed to ensure that a zone's keys match a defined DNSSEC
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policy.
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- The experimental "SIT" feature in BIND 9.10 has been renamed "COOKIE" and
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is no longer optional. EDNS COOKIE is a mechanism enabling clients to
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detect off-path spoofed responses, and servers to detect spoofed-source
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queries. Clients that identify themselves using COOKIE options are not
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subject to response rate limiting (RRL) and can receive larger UDP
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responses.
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- SERVFAIL responses can now be cached for a limited time (defaulting to 1
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second, with an upper limit of 30). This can reduce the frequency of
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retries when a query is persistently failing.
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- Added an "nsip-wait-recurse" switch to RPZ. This causes NSIP rules to be
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skipped if a name server IP address isn't in the cache yet; the address
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will be looked up and the rule will be applied on future queries.
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- Added a Python RNDC module. This allows multiple commands to sent over a
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persistent RNDC channel, which saves time.
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- The "controls" block in named.conf can now grant read-only "rndc" access
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to specified clients or keys. Read-only clients could, for example, check
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"rndc status" but could not reconfigure or shut down the server.
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- "rndc" commands can now return arbitrarily large amounts of text to the
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caller.
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- The zone serial number of a dynamically updatable zone can now be set via
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"rndc signing -serial <number> <zonename>". This allows inline-signing
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zones to be set to a specific serial number.
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- The new "rndc nta" command can be used to set a Negative Trust Anchor
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(NTA), disabling DNSSEC validation for a specific domain; this can be
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used when responses from a domain are known to be failing validation due
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to administrative error rather than because of a spoofing attack.
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Negative trust anchors are strictly temporary; by default they expire
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after one hour, but can be configured to last up to one week.
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- "rndc delzone" can now be used on zones that were not originally created
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by "rndc addzone".
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- "rndc modzone" reconfigures a single zone, without requiring the entire
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server to be reconfigured.
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- "rndc showzone" displays the current configuration of a zone.
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- "rndc managed-keys" can be used to check the status of RFC 5001 managed
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trust anchors, or to force trust anchors to be refreshed.
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- "max-cache-size" can now be set to a percentage of available memory. The
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default is 90%.
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- Update forwarding performance has been improved by allowing a single TCP
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connection to be shared by multiple updates.
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- The EDNS Client Subnet (ECS) option is now supported for authoritative
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servers; if a query contains an ECS option then ACLs containing "geoip"
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or "ecs" elements can match against the the address encoded in the
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option. This can be used to select a view for a query, so that different
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answers can be provided depending on the client network.
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- The EDNS EXPIRE option has been implemented on the client side, allowing
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a slave server to set the expiration timer correctly when transferring
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zone data from another slave server.
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- The key generation and manipulation tools (dnssec-keygen, dnssec-settime,
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dnssec-importkey, dnssec-keyfromlabel) now take "-Psync" and "-Dsync"
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options to set the publication and deletion times of CDS and CDNSKEY
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parent-synchronization records. Both named and dnssec-signzone can now
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publish and remove these records at the scheduled times.
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- A new "minimal-any" option reduces the size of UDP responses for query
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type ANY by returning a single arbitrarily selected RRset instead of all
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RRsets.
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- A new "masterfile-style" zone option controls the formatting of text zone
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files: When set to "full", a zone file is dumped in
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single-line-per-record format.
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- "serial-update-method" can now be set to "date". On update, the serial
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number will be set to the current date in YYYYMMDDNN format.
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- "dnssec-signzone -N date" sets the serial number to YYYYMMDDNN.
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- "named -L <filename>" causes named to send log messages to the specified
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file by default instead of to the system log.
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- "dig +ttlunits" prints TTL values with time-unit suffixes: w, d, h, m, s
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for weeks, days, hours, minutes, and seconds.
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- "dig +unknownformat" prints dig output in RFC 3597 "unknown record"
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presentation format.
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- "dig +ednsopt" allows dig to set arbitrary EDNS options on requests.
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- "dig +ednsflags" allows dig to set yet-to-be-defined EDNS flags on
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requests.
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- "mdig" is an alternate version of dig which sends multiple pipelined TCP
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queries to a server. Instead of waiting for a response after sending a
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query, it sends all queries immediately and displays responses in the
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order received.
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- "serial-query-rate" no longer controls NOTIFY messages. These are
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separately controlled by "notify-rate" and "startup-notify-rate".
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- "nsupdate" now performs "check-names" processing by default on records to
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be added. This can be disabled with "check-names no".
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- The statistics channel now supports DEFLATE compression, reducing the
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size of the data sent over the network when querying statistics.
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- New counters have been added to the statistics channel to track the sizes
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of incoming queries and outgoing responses in histogram buckets, as
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specified in RSSAC002.
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- A new NXDOMAIN redirect method (option "nxdomain-redirect") has been
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added, allowing redirection to a specified DNS namespace instead of a
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single redirect zone.
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- When starting up, named now ensures that no other named process is
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already running.
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- Files created by named to store information, including "mkeys" and "nzf"
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files, are now named after their corresponding views unless the view name
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contains characters incompatible with use as a filename. Old style
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filenames (based on the hash of the view name) will still work.
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#### BIND 9.10.0
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BIND 9.10.0 includes a number of changes from BIND 9.9 and earlier
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releases. New features include:
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- DNS Response-rate limiting (DNS RRL), which blunts the
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impact of reflection and amplification attacks, is always
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compiled in and no longer requires a compile-time option
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to enable it.
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- An experimental "Source Identity Token" (SIT) EDNS option
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is now available. Similar to DNS Cookies as invented by
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Donald Eastlake 3rd, these are designed to enable clients
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to detect off-path spoofed responses, and to enable servers
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to detect spoofed-source queries. Servers can be configured
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to send smaller responses to clients that have not identified
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themselves using a SIT option, reducing the effectiveness of
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amplification attacks. RRL processing has also been updated;
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clients proven to be legitimate via SIT are not subject to
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rate limiting. Use "configure --enable-sit" to enable this
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feature in BIND.
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- A new zone file format, "map", stores zone data in a
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format that can be mapped directly into memory, allowing
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significantly faster zone loading.
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- "delv" (domain entity lookup and validation) is a new tool
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with dig-like semantics for looking up DNS data and performing
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internal DNSSEC validation. This allows easy validation in
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environments where the resolver may not be trustworthy, and
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assists with troubleshooting of DNSSEC problems. (NOTE:
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In previous development releases of BIND 9.10, this utility
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was called "delve". The spelling has been changed to avoid
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confusion with the "delve" utility included with the Xapian
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search engine.)
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- Improved EDNS(0) processing for better resolver performance
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and reliability over slow or lossy connections.
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- A new "configure --with-tuning=large" option tunes certain
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compiled-in constants and default settings to values better
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suited to large servers with abundant memory. This can
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improve performance on such servers, but will consume more
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memory and may degrade performance on smaller systems.
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- Substantial improvement in response-policy zone (RPZ)
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performance. Up to 32 response-policy zones can be
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configured with minimal performance loss.
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- To improve recursive resolver performance, cache records
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which are still being requested by clients can now be
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automatically refreshed from the authoritative server
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before they expire, reducing or eliminating the time
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window in which no answer is available in the cache.
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- New "rpz-client-ip" triggers and drop policies allowing
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response policies based on the IP address of the client.
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- ACLs can now be specified based on geographic location
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using the MaxMind GeoIP databases. Use "configure
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--with-geoip" to enable.
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- Zone data can now be shared between views, allowing
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multiple views to serve the same zones authoritatively
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without storing multiple copies in memory.
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- New XML schema (version 3) for the statistics channel
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includes many new statistics and uses a flattened XML tree
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for faster parsing. The older schema is now deprecated.
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- A new stylesheet, based on the Google Charts API, displays
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XML statistics in charts and graphs on javascript-enabled
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browsers.
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- The statistics channel can now provide data in JSON
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format as well as XML.
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- New stats counters track TCP and UDP queries received
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per zone, and EDNS options received in total.
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- The internal and export versions of the BIND libraries
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(libisc, libdns, etc) have been unified so that external
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library clients can use the same libraries as BIND itself.
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- A new compile-time option, "configure --enable-native-pkcs11",
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allows BIND 9 cryptography functions to use the PKCS#11 API
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natively, so that BIND can drive a cryptographic hardware
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service module (HSM) directly instead of using a modified
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OpenSSL as an intermediary. (Note: This feature requires an
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HSM to have a full implementation of the PKCS#11 API; many
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current HSMs only have partial implementations. The new
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"pkcs11-tokens" command can be used to check API completeness.
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Native PKCS#11 is known to work with the Thales nShield HSM
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and with SoftHSM version 2 from the Open DNSSEC project.)
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- The new "max-zone-ttl" option enforces maximum TTLs for
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zones. This can simplify the process of rolling DNSSEC keys
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by guaranteeing that cached signatures will have expired
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within the specified amount of time.
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- "dig +subnet" sends an EDNS CLIENT-SUBNET option when
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querying.
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- "dig +expire" sends an EDNS EXPIRE option when querying.
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When this option is sent with an SOA query to a server
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that supports it, it will report the expiry time of
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a slave zone.
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- New "dnssec-coverage" tool to check DNSSEC key coverage
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for a zone and report if a lapse in signing coverage has
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been inadvertently scheduled.
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- Signing algorithm flexibility and other improvements
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for the "rndc" control channel.
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- "named-checkzone" and "named-compilezone" can now read
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journal files, allowing them to process dynamic zones.
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- Multiple DLZ databases can now be configured. Individual
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zones can be configured to be served from a specific DLZ
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database. DLZ databases now serve zones of type "master"
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and "redirect".
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- "rndc zonestatus" reports information about a specified zone.
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- "named" now listens on IPv6 as well as IPv4 interfaces
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by default.
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- "named" now preserves the capitalization of names
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when responding to queries: for instance, a query for
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"example.com" may be answered with "example.COM" if the
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name was configured that way in the zone file. Some
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clients have a bug causing them to depend on the older
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behavior, in which the case of the answer always matched
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the case of the query, rather than the case of the name
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configured in the DNS. Such clients can now be specified
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in the new "no-case-compress" ACL; this will restore the
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older behavior of "named" for those clients only.
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- new "dnssec-importkey" command allows the use of offline
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DNSSEC keys with automatic DNSKEY management.
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- New "named-rrchecker" tool to verify the syntactic
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correctness of individual resource records.
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- When re-signing a zone, the new "dnssec-signzone -Q" option
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drops signatures from keys that are still published but are
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no longer active.
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- "named-checkconf -px" will print the contents of configuration
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files with the shared secrets obscured, making it easier to
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share configuration (e.g. when submitting a bug report)
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without revealing private information.
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- "rndc scan" causes named to re-scan network interfaces for
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changes in local addresses.
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- On operating systems with support for routing sockets,
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network interfaces are re-scanned automatically whenever
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they change.
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- "tsig-keygen" is now available as an alternate command
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name to use for "ddns-confgen".
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#### BIND 9.9.0
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BIND 9.9.0 includes a number of changes from BIND 9.8 and earlier
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releases. New features include:
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- Inline signing, allowing automatic DNSSEC signing of
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master zones without modification of the zonefile, or
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"bump in the wire" signing in slaves.
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- NXDOMAIN redirection.
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- New 'rndc flushtree' command clears all data under a given
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name from the DNS cache.
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- New 'rndc sync' command dumps pending changes in a dynamic
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zone to disk without a freeze/thaw cycle.
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- New 'rndc signing' command displays or clears signing status
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records in 'auto-dnssec' zones.
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- NSEC3 parameters for 'auto-dnssec' zones can now be set prior
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to signing, eliminating the need to initially sign with NSEC.
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- Startup time improvements on large authoritative servers.
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- Slave zones are now saved in raw format by default.
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- Several improvements to response policy zones (RPZ).
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- Improved hardware scalability by using multiple threads
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to listen for queries and using finer-grained client locking
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- The 'also-notify' option now takes the same syntax as
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'masters', so it can used named masterlists and TSIG keys.
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- 'dnssec-signzone -D' writes an output file containing only DNSSEC
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data, which can be included by the primary zone file.
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- 'dnssec-signzone -R' forces removal of signatures that are
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not expired but were created by a key which no longer exists.
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- 'dnssec-signzone -X' allows a separate expiration date to
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be specified for DNSKEY signatures from other signatures.
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- New '-L' option to dnssec-keygen, dnssec-settime, and
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dnssec-keyfromlabel sets the default TTL for the key.
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- dnssec-dsfromkey now supports reading from standard input,
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to make it easier to convert DNSKEY to DS.
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- RFC 1918 reverse zones have been added to the empty-zones
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table per RFC 6303.
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- Dynamic updates can now optionally set the zone's SOA serial
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number to the current UNIX time.
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- DLZ modules can now retrieve the source IP address of
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the querying client.
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- 'request-ixfr' option can now be set at the per-zone level.
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- 'dig +rrcomments' turns on comments about DNSKEY records,
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indicating their key ID, algorithm and function
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- Simplified nsupdate syntax and added readline support
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#### BIND 9.8.0
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BIND 9.8.0 includes a number of changes from BIND 9.7 and earlier
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releases. New features include:
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- Built-in trust anchor for the root zone, which can be
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switched on via "dnssec-validation auto;"
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- Support for DNS64.
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- Support for response policy zones (RPZ).
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- Support for writable DLZ zones.
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- Improved ease of configuration of GSS/TSIG for
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interoperability with Active Directory
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- Support for GOST signing algorithm for DNSSEC.
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- Removed RTT Banding from server selection algorithm.
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- New "static-stub" zone type.
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- Allow configuration of resolver timeouts via
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"resolver-query-timeout" option.
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- The DLZ "dlopen" driver is now built by default.
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- Added a new include file with function typedefs
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for the DLZ "dlopen" driver.
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- Made "--with-gssapi" default.
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- More verbose error reporting from DLZ LDAP.
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#### BIND 9.7.0
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BIND 9.7.0 includes a number of changes from BIND 9.6 and earlier
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releases. Most are intended to simplify DNSSEC configuration.
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New features include:
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- Fully automatic signing of zones by "named".
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- Simplified configuration of DNSSEC Lookaside Validation (DLV).
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- Simplified configuration of Dynamic DNS, using the "ddns-confgen"
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command line tool or the "local" update-policy option. (As a side
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effect, this also makes it easier to configure automatic zone
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re-signing.)
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- New named option "attach-cache" that allows multiple views to
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share a single cache.
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- DNS rebinding attack prevention.
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- New default values for dnssec-keygen parameters.
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- Support for RFC 5011 automated trust anchor maintenance
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- Smart signing: simplified tools for zone signing and key
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maintenance.
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- The "statistics-channels" option is now available on Windows.
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- A new DNSSEC-aware libdns API for use by non-BIND9 applications
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- On some platforms, named and other binaries can now print out
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a stack backtrace on assertion failure, to aid in debugging.
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- A "tools only" installation mode on Windows, which only installs
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dig, host, nslookup and nsupdate.
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- Improved PKCS#11 support, including Keyper support and explicit
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OpenSSL engine selection.
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#### BIND 9.6.0
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- Full NSEC3 support
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- Automatic zone re-signing
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- New update-policy methods tcp-self and 6to4-self
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- The BIND 8 resolver library, libbind, has been removed from the BIND 9
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distribution and is now available as a separate download.
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- Change the default pid file location from /var/run to
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/var/run/{named,lwresd} for improved chroot/setuid support.
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#### BIND 9.5.0
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- GSS-TSIG support (RFC 3645).
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- DHCID support.
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- Experimental http server and statistics support for named via xml.
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- More detailed statistics counters including those supported in BIND 8.
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- Faster ACL processing.
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- Use Doxygen to generate internal documentation.
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- Efficient LRU cache-cleaning mechanism.
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- NSID support.
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BIND 9.4.0
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- Implemented "additional section caching (or acache)", an internal cache
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framework for additional section content to improve response performance.
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Several configuration options were provided to control the behavior.
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- New notify type 'master-only'. Enable notify for master zones only.
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- Accept 'notify-source' style syntax for query-source.
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- rndc now allows addresses to be set in the server clauses.
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- New option "allow-query-cache". This lets "allow-query" be used to
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specify the default zone access level rather than having to have every
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zone override the global value. "allow-query-cache" can be set at both
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the options and view levels. If "allow-query-cache" is not set then
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"allow-recursion" is used if set, otherwise "allow-query" is used if set
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unless "recursion no;" is set in which case "none;" is used, otherwise
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the default (localhost; localnets;) is used.
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- rndc: the source address can now be specified.
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- ixfr-from-differences now takes master and slave in addition to yes and
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no at the options and view levels.
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- Allow the journal's name to be changed via named.conf.
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- 'rndc notify zone [class [view]]' resend the NOTIFY messages for the
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specified zone.
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- 'dig +trace' now randomly selects the next servers to try. Report if
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there is a bad delegation.
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- Improve check-names error messages.
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- Make public the function to read a key file, dst_key_read_public().
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- dig now returns the byte count for axfr/ixfr.
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|
- allow-update is now settable at the options / view level.
|
|
- named-checkconf now checks the logging configuration.
|
|
- host now can turn on memory debugging flags with '-m'.
|
|
- Don't send notify messages to self.
|
|
- Perform sanity checks on NS records which refer to 'in zone' names.
|
|
- New zone option "notify-delay". Specify a minimum delay between sets of
|
|
NOTIFY messages.
|
|
- Extend adjusting TTL warning messages.
|
|
- Named and named-checkzone can now both check for non-terminal wildcard
|
|
records.
|
|
- "rndc freeze/thaw" now freezes/thaws all zones.
|
|
- named-checkconf now check acls to verify that they only refer to existing
|
|
acls.
|
|
- The server syntax has been extended to support a range of servers.
|
|
- Report differences between hints and real NS rrset and associated address
|
|
records.
|
|
- Preserve the case of domain names in rdata during zone transfers.
|
|
- Restructured the data locking framework using architecture dependent
|
|
atomic operations (when available), improving response performance on
|
|
multi-processor machines significantly. x86, x86_64, alpha, powerpc, and
|
|
mips are currently supported.
|
|
- UNIX domain controls are now supported.
|
|
- Add support for additional zone file formats for improving loading
|
|
performance. The masterfile-format option in named.conf can be used to
|
|
specify a non-default format. A separate command named-compilezone was
|
|
provided to generate zone files in the new format. Additionally, the -I
|
|
and -O options for dnssec-signzone specify the input and output formats.
|
|
- dnssec-signzone can now randomize signature end times (dnssec-signzone -j
|
|
jitter).
|
|
- Add support for CH A record.
|
|
- Add additional zone data constancy checks. named-checkzone has extended
|
|
checking of NS, MX and SRV record and the hosts they reference. named
|
|
has extended post zone load checks. New zone options: check-mx and
|
|
integrity-check.
|
|
- edns-udp-size can now be overridden on a per server basis.
|
|
- dig can now specify the EDNS version when making a query.
|
|
- Added framework for handling multiple EDNS versions.
|
|
- Additional memory debugging support to track size and mctx arguments.
|
|
- Detect duplicates of UDP queries we are recursing on and drop them. New
|
|
stats category "duplicates".
|
|
- "USE INTERNAL MALLOC" is now runtime selectable.
|
|
- The lame cache is now done on a <qname,qclass,qtype> basis as some
|
|
servers only appear to be lame for certain query types.
|
|
- Limit the number of recursive clients that can be waiting for a single
|
|
query (<qname,qtype,qclass>) to resolve. New options clients-per-query
|
|
and max-clients-per-query.
|
|
- dig: report the number of extra bytes still left in the packet after
|
|
processing all the records.
|
|
- Support for IPSECKEY rdata type.
|
|
- Raise the UDP recieve buffer size to 32k if it is less than 32k.
|
|
- x86 and x86_64 now have seperate atomic locking implementations.
|
|
- named-checkconf now validates update-policy entries.
|
|
- Attempt to make the amount of work performed in a iteration self tuning.
|
|
The covers nodes clean from the cache per iteration, nodes written to
|
|
disk when rewriting a master file and nodes destroyed per iteration when
|
|
destroying a zone or a cache.
|
|
- ISC string copy API.
|
|
- Automatic empty zone creation for D.F.IP6.ARPA and friends. Note: RFC
|
|
1918 zones are not yet covered by this but are likely to be in a future
|
|
release.
|
|
- New options: empty-server, empty-contact, empty-zones-enable and
|
|
disable-empty-zone.
|
|
- dig now has a '-q queryname' and '+showsearch' options.
|
|
- host/nslookup now continue (default)/fail on SERVFAIL.
|
|
- dig now warns if 'RA' is not set in the answer when 'RD' was set in the
|
|
query. host/nslookup skip servers that fail to set 'RA' when 'RD' is set
|
|
unless a server is explicitly set.
|
|
- Integrate contibuted DLZ code into named.
|
|
- Integrate contibuted IDN code from JPNIC.
|
|
- libbind: corresponds to that from BIND 8.4.7.
|
|
|
|
#### BIND 9.3.0
|
|
|
|
- DNSSEC is now DS based (RFC 3658).
|
|
- DNSSEC lookaside validation.
|
|
- check-names is now implemented.
|
|
- rrset-order is more complete.
|
|
- IPv4/IPv6 transition support, dual-stack-servers.
|
|
- IXFR deltas can now be generated when loading master files,
|
|
ixfr-from-differences.
|
|
- It is now possible to specify the size of a journal, max-journal-size.
|
|
- It is now possible to define a named set of master servers to be used in
|
|
masters clause, masters.
|
|
- The advertised EDNS UDP size can now be set, edns-udp-size.
|
|
- allow-v6-synthesis has been obsoleted.
|
|
- Zones containing MD and MF will now be rejected.
|
|
- dig, nslookup name. now report "Not Implemented" as NOTIMP rather than
|
|
NOTIMPL. This will have impact on scripts that are looking for NOTIMPL.
|
|
- libbind: corresponds to that from BIND 8.4.5.
|
|
|
|
#### BIND 9.2.0
|
|
|
|
- The size of the cache can now be limited using the "max-cache-size"
|
|
option.
|
|
- The server can now automatically convert RFC1886-style recursive lookup
|
|
requests into RFC2874-style lookups, when enabled using the new option
|
|
"allow-v6-synthesis". This allows stub resolvers that support AAAA
|
|
records but not A6 record chains or binary labels to perform lookups in
|
|
domains that make use of these IPv6 DNS features.
|
|
- Performance has been improved.
|
|
- The man pages now use the more portable "man" macros rather than the
|
|
"mandoc" macros, and are installed by "make install".
|
|
- The named.conf parser has been completely rewritten. It now supports
|
|
"include" directives in more places such as inside "view" statements, and
|
|
it no longer has any reserved words.
|
|
- The "rndc status" command is now implemented.
|
|
- rndc can now be configured automatically.
|
|
- A BIND 8 compatible stub resolver library is now included in lib/bind.
|
|
- OpenSSL has been removed from the distribution. This means that to use
|
|
DNSSEC, OpenSSL must be installed and the --with-openssl option must be
|
|
supplied to configure. This does not apply to the use of TSIG, which
|
|
does not require OpenSSL.
|
|
- The source distribution now builds on Windows. See
|
|
win32utils/readme1.txt and win32utils/win32-build.txt for details.
|
|
- This distribution also includes a new lightweight stub resolver library
|
|
and associated resolver daemon that fully support forward and reverse
|
|
lookups of both IPv4 and IPv6 addresses. This library is considered
|
|
experimental and is not a complete replacement for the BIND 8 resolver
|
|
library. Applications that use the BIND 8 `res_*` functions to perform
|
|
DNS lookups or dynamic updates still need to be linked against the BIND 8
|
|
libraries. For DNS lookups, they can also use the new "getrrsetbyname()"
|
|
API.
|
|
- BIND 9.2 is capable of acting as an authoritative server for DNSSEC
|
|
secured zones. This functionality is believed to be stable and complete
|
|
except for lacking support for verifications involving wildcard records
|
|
in secure zones.
|
|
- When acting as a caching server, BIND 9.2 can be configured to perform
|
|
DNSSEC secure resolution on behalf of its clients. This part of the
|
|
DNSSEC implementation is still considered experimental. For detailed
|
|
information about the state of the DNSSEC implementation, see the file
|
|
doc/misc/dnssec.
|