GitLab

4152.   [func]          Implement DNS COOKIE option.  This replaces the
                        experimental SIT option of BIND 9.10.  The following
                        named.conf directives are available: send-cookie,
                        cookie-secret, cookie-algorithm, nocookie-udp-size
                        and require-server-cookie.  The following dig options
                        are available: +[no]cookie[=value] and +[no]badcookie.
                        [RT #39928]

3938.	[func]		Added quotas to be used in recursive resolvers
			that are under high query load for names in zones
			whose authoritative servers are nonresponsive or
			are experiencing a denial of service attack.

			- "fetches-per-server" limits the number of
			  simultaneous queries that can be sent to any
			  single authoritative server.  The configured
			  value is a starting point; it is automatically
			  adjusted downward if the server is partially or
			  completely non-responsive. The algorithm used to
			  adjust the quota can be configured via the
			  "fetch-quota-params" option.
			- "fetches-per-zone" limits the number of
			  simultaneous queries that can be sent for names
			  within a single domain.  (Note: Unlike
			  "fetches-per-server", this value is not
			  self-tuning.)
			- New stats counters have been added to count
			  queries spilled due to these quotas.

			See the ARM for details of these options. [RT #37125]

                        experimental SIT option of BIND 9.10.  The following
                        named.conf directives are avaliable: send-cookie,
                        cookie-secret, cookie-algorithm and nocookie-udp-size.
                        The following dig options are available:
                        +[no]cookie[=value] and +[no]badcookie.  [RT #39928]

This was not done in the previous merge commit, so that it could be
merged cleanly into release branches.

                        method is now supported. [RT #37989]

4080.	[func]		Completed change #4022, adding a "lock-file" option
			to named.conf to override the default lock file,
			in addition to the "named -X <filename>" command
			line option.  Setting the lock file to "none"
			using either method disables the check completely.
			[RT #37908]

4040.	[func]		Added server-side support for pipelined TCP
			queries. TCP connections are no longer closed after
			the first query received from a client. (The new
			"keep-response-order" option allows clients to be
			specified for which the old behavior will still be
			used.) [RT #37821]

4030.	[func]		"rndc delzone" is now applicable to zones that were
			configured in named.conf, as well as zones that
			were added via "rndc addzone". (Note, however, that
			if named.conf is not also modified, the deleted zone
			will return when named is reloaded.) [RT #37887]

4029.	[func]		"rndc showzone" displays the current configuration
			of a specified zone. [RT #37887]

also fixes and documentation for max-recursion-depth

4006.	[security]	A flaw in delegation handling could be exploited
			to put named into an infinite loop.  This has
			been addressed by placing limits on the number
			of levels of recursion named will allow (default 7),
			and the number of iterative queries that it will
			send (default 50) before terminating a recursive
			query (CVE-2014-8500).

			The recursion depth limit is configured via the
			"max-recursion-depth" option.  [RT #35780]

                        "buffered yes;" when defining a channel. [RT #26561]

                        startup-notify-rate instead of serial-query-rate.
                        [RT #24454]

3955.   [bug]           Notify messages due to changes are no longer queued
                        behind startup notify messages. [RT #24454]

                        EDNS(1) queries (define DRAFT_ANDREWS_EDNS1 when
                        building).  Add support for limiting the EDNS version
                        advertised to servers: server { edns-version 0; };
                        Log the EDNS version received in the query log.
                        [RT #35864]

3943.	[func]		SERVFAIL responses can now be cached for a
			limited time (configured by "servfail-ttl",
			default 10 seconds, limit 30). This can reduce
			the frequency of retries when an authoritative
			server is known to be failing, e.g., due to
			ongoing DNSSEC validation problems. [RT #21347]

3936.	[func]		Added authoritative support for the EDNS Client
			Subnet (ECS) option.

			ACLs can now include "ecs" elements which specify
			an address or network prefix; if an ECS option is
			included in a DNS query, then the address encoded
			in the option will be matched against "ecs" ACL
			elements.

			Also, if an ECS address is included in a query,
			then it will be used instead of the client source
			address when matching "geoip" ACL elements.  This
			behavior can be overridden with "geoip-use-ecs no;".

			When "ecs" or "geoip" ACL elements are used to
			select a view for a query, the response will include
			an ECS option to indicate which client network the
			answer is valid for.

			(Thanks to Vincent Bernat.) [RT #36781]

(cherry picked from commit 0a484c39)

3882.	[func]		By default, negative trust anchors will be tested
			periodically to see whether data below them can be
			validated, and if so, they will be allowed to
			expire early. The "rndc nta -force" option
			overrides this behvaior.  The default NTA lifetime
			and the recheck frequency can be configured by the
			"nta-lifetime" and "nta-recheck" options. [RT #36146]

3852.	[func]		Increase the default number of clients available
			for servicing lightweight resolver queries, and
			make them configurable via the "lwres-tasks" and
			"lwres-clients" options.  (Thanks to Tomas Hozza.)
			[RT #35857]

3814.	[func]		The "masterfile-style" zone option controls the
			formatting of dumped zone files. Options are
			"relative" (multiline format) and "full" (one
			record per line). The default is "relative".
			[RT #20798]

3811.	[func]		"serial-update-method date;" sets serial number
			on dynamic update to today's date in YYYYMMDDNN
			format. (Thanks to Bradley Forschinger.) [RT #24903]

3746.	[func]		New "max-zone-ttl" option enforces maximum
			TTLs for zones. If loading a zone containing a
			higher TTL, the load fails. DDNS updates with
			higher TTLs are accepted but the TTL is truncated.
			(Note: Currently supported for master zones only;
			inline-signing slaves will be added.) [RT #38405]

                        (which are similar to DNS Cookies by Donald Eastlake)
                        and are designed to help clients detect off path
                        spoofed responses and for servers to detect legitimate
                        clients.

                        SIT use a experimental EDNS option code (65001).

                        SIT can be enabled via --enable-developer or
                        --enable-sit.  It is on by default in Windows.

                        RRL processing as been updated to know about SIT with
                        legitimate clients not being rate limited. [RT #35389]

                        information will be automatically updated if the
                        OS supports routing sockets.  Use
                        "automatic-interface-scan no;" to disable.

                        Add "rndc scan" to trigger a scan. [RT #23027]

3731.	[func]		Added a "no-case-compress" ACL, which causes
			named to use case-insensitive compression
			(disabling change #3645) for specified
			clients. (This is useful when dealing
			with broken client implementations that
			use case-sensitive name comparisons,
			rejecting responses that fail to match the
			capitalization of the query that was sent.)
			[RT #35300]

                        for, see prefetch option for details. [RT #35041]

                        shared secrets by specifying '-x'. [RT #34465]