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]

                        [RT #40033]

4163.   [bug]           Address compiler warnings. [RT #40024]

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]

4124.	[func]		Log errors or warnings encountered when parsing the
			internal default configuration.  Clarify the logging
			of errors and warnings encountered in rndc
			addzone or modzone parameters. [RT #39440]

                        on out of memory. [RT #39310]

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]

4021.	[bug]		Adjust max-recursion-queries to accommodate
			the need for more queries when the cache is
			empty. [RT #38104]

                        properly implemented. [RT #37792]

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]

                        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]

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]

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]

                        (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]

3741.	[func]		"delve" (domain entity lookup and validation engine):
			A new tool with dig-like semantics for performing DNS
			lookups, with internal DNSSEC validation, using the
			same resolver and validator logic as named. This
			allows easy validation of DNSSEC data in environments
			with untrustworthy resolvers, and assists with
			troubleshooting of DNSSEC problems. (Note: not yet
			available on win32.) [RT #32406]

                        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]

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

3698.	[cleanup]	Replaced all uses of memcpy() with memmove().
			[RT #35120]

                        records exist or do not exist. [RT #33355]

3535.	[func]		Add support for setting Differentiated Services Code
			Point (DSCP) values in named.  Most configuration
			options which take a "port" option (e.g.,
			listen-on, forwarders, also-notify, masters,
			notify-source, etc) can now also take a "dscp"
			option specifying a code point for use with
			outgoing traffic, if supported by the underlying
			OS. [RT #27596]

                        by default.  Named previously only listened on IPv4
                        interfaces by default unless named was running in
                        IPv6 only mode.  [RT #32945]

3501.	[func]		zone-statistics now takes three options: full,
			terse, and none. "yes" and "no" are retained as
			synonyms for full and terse, respectively. [RT #29165]

3494.	[func]		DNS RRL: Blunt the impact of DNS reflection and
			amplification attacks by rate-limiting substantially-
			identical responses. [RT #28130]

                        buffers with constant data. [RT #32064]

Squashed commit of the following:

commit 3433b96bf11f8c90ccbe412f01d02a6d8bbc2d33
Author: Mark Andrews <marka@isc.org>
Date:   Sat Dec 8 12:41:16 2012 +1100

    isc_buffer_init -> isc_buffer_constinit

commit c22dbcc1122a0a44f7b46068e0ccbc25353a57d5
Author: Mark Andrews <marka@isc.org>
Date:   Sat Dec 8 12:38:39 2012 +1100

    isc_buffer_init -> isc_buffer_constinit

commit 900820416c45c1887d0d22d7a010df60a903bd56
Author: Mark Andrews <marka@isc.org>
Date:   Sat Dec 8 12:24:19 2012 +1100

    remove isc_buffer_reconstinit

commit f815711c17b05f9961786a90b9bae902d3c01494
Author: Mark Andrews <marka@isc.org>
Date:   Wed Dec 5 15:42:57 2012 +1100

    add isc_buffer_constinit

                        referenced in a also-notify. [RT #31004]

3339.   [func]          Allow the maximum supported rsa exponent size to be                        specified: "max-rsa-exponent-size <value>;" [RT #29228]

                        named to not recover if it looses connectivity.
                        [RT #29623]

3327.	[func]		Added 'filter-aaaa-on-v6' option; this is similar
			to 'filter-aaaa-on-v4' but applies to IPv6
			connections.  (Use "configure --enable-filter-aaaa"
			to enable this option.)  [RT #27308]