Bug 1769869 - [RFE] named: stale-answer support
Summary: [RFE] named: stale-answer support
Alias: None
Product: Fedora
Classification: Fedora
Component: bind
Version: rawhide
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Petr Menšík
QA Contact: Fedora Extras Quality Assurance
Depends On: 1664863
TreeView+ depends on / blocked
Reported: 2019-11-07 16:14 UTC by Petr Menšík
Modified: 2019-11-25 20:52 UTC (History)
8 users (show)

Fixed In Version: bind-9.11.12-4.fc32
Doc Type: Enhancement
Doc Text:
Clone Of: 1664863
Last Closed: 2019-11-25 20:52:17 UTC
Type: ---

Attachments (Terms of Use)

Description Petr Menšík 2019-11-07 16:14:36 UTC
+++ This bug was initially created as a clone of Bug #1664863 +++

Description of problem:
Support for stale-answer-enable and others is missing. Allows responding from cache when authoritative servers are under attack or not responding.

Upstream change:

4700. [func] Serving of stale answers is now supported. This

                        allows named to provide stale cached answers when
                        the authoritative server is under attack.
                        See max-stale-ttl, stale-answer-enable,
                        stale-answer-ttl. [RT #44790]

First commit:

Check bug #1653111 comment #7 for more details.

Version-Release number of selected component (if applicable):

Additional info:
Upstream has no support for stale cache in 9.11 ESV version, the feature was introduced in 9.12 version.

--- Additional comment from Petr Menšík on 2019-08-29 11:40:50 CEST ---

Previous refractoring of resolver [1] makes backport hard. Not simple to check it is possible or not, have to decipher which changes would land where in the old code.

1. https://gitlab.isc.org/isc-projects/bind9/commit/96912e44b0b180de56f47d438f91c9e70925bd16

Comment 1 Petr Menšík 2019-11-25 20:52:17 UTC
Built on rawhide already. No plans to backport it to stable releases now.

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