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.
These options are not available by default;
use "configure --enable-fetchlimit" (or
--enable-developer) to include them in the build.
See the ARM for details of these options. [RT #37125]
response when there is a malformed EDNS option.
[RT #39647]
4153. [bug] Dig should zero non significant +subnet bits. Check
that non significant ECS bits are zero on receipt.
[RT #39647]
(cherry picked from commit 3e33f4198d)
4121. [bug] When updating a response-policy zone via AXFR,
summary data about other policy zones could fall
out of sync. Ultimately this could trigger an
assertion failure in rpz.c. [RT #39567]
(cherry picked from commit 19365b43e9)
4120. [bug] A bug in RPZ could cause the server to crash if
policy zones were updated while recursion was
pending for RPZ processing of an active query.
[RT #39415]
(cherry picked from commit 7e6cf6fc6e)
4063. [bug] Asynchronous zone loads were not handled
correctly when the zone load was already in
progress; this could trigger a crash in zt.c.
[RT #37573]
(cherry picked from commit 7acc2f2156)
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]
a REQUIRE assertion failure when a fetch is actually
initiated. [ RT #35899]
Squashed commit of the following:
commit 7f4e1f3917d743089c42cc52ec2c0eea598d2c00
Author: Mukund Sivaraman <muks@isc.org>
Date: Sun May 4 22:34:34 2014 +0530
Fix a comment
commit 6a35a6a2346013fa8e3798b9b680d8a3031fcb03
Author: Mark Andrews <marka@isc.org>
Date: Sun May 4 23:34:25 2014 +1000
pass the correct name to query_prefetch
(cherry picked from commit b36fc8294e)
3824. [bug] A collision between two flag values could cause
problems with cache cleaning when SIT was enabled.
[RT #35858]
(cherry picked from commit e01fbe2a45)
Conflicts:
CHANGES
in draft-andrews-dnsext-expire-00. Retrivial of
remaining time to expiry from slave zones is supported.
EXPIRE uses an experimental option code (65002) and
is subject to change. [RT #35416]
