+++ 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: https://gitlab.isc.org/isc-projects/bind9/commit/df50751585b64f72d93ad665abf0f485c8941a3b Check bug #1653111 comment #7 for more details. Version-Release number of selected component (if applicable): bind-9.11.4-14.P2.el8 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
Built on rawhide already. No plans to backport it to stable releases now.