commit 162e5e0062ce923c494cc64282f293f0ed64fc10
author Sven Mueller <smu@google.com> Wed Feb 27 21:17:37 2019 +0000
committer Simon Kelley <simon@thekelleys.org.uk> Wed Feb 27 21:17:37 2019 +0000
tree eabb32389614d81b82886be84768179ba3eb37fb
parent 4219adeeef8a3d5447af4c9bd1e4e7c05b3112fd

Fix bug added in 2.80 non-terminal code which returns NODATA instead of NXDOMAIN.

Thanks to Sven Muleller and Maciej Żenczykowski for work on this.

https://bugzilla.redhat.com/show_bug.cgi?id=1674067 refers.

src/cache.c

diff --git a/src/cache.c b/src/cache.c
index 906f5e1..44c13e4 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -790,6 +790,7 @@
     if (!is_outdated_cname_pointer(crecp) &&
 	!is_expired(now, crecp) &&
 	(crecp->flags & F_FORWARD) &&
+	!(crecp->flags & F_NXDOMAIN) && 
 	hostname_isequal(name, cache_get_name(crecp)))
       return 1;