From 2b6893cdb811c57ff0fc01cdd75f86d3e5567c3f Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 28 Aug 2014 12:40:12 +0200
Subject: [PATCH] dont delete records but set ttl to 1

-> 10.2.  Announcements to Flush Outdated Cache Entries

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cache.c b/cache.c
index 812478e..c78a3b7 100644
--- a/cache.c
+++ b/cache.c
@@ -301,7 +301,7 @@ cache_answer(struct interface *iface, uint8_t *base, int blen, char *name, struc
 	if (r) {
 		if (!a->ttl) {
 			DBG(1, "D -> %s %s ttl:%d\n", dns_type_string(r->type), r->record, r->ttl);
-			cache_record_free(r);
+			r->time = time(0) + 1 - r->ttl;
 		} else {
 			r->ttl = a->ttl;
 			DBG(1, "A -> %s %s ttl:%d\n", dns_type_string(r->type), r->record, r->ttl);
-- 
2.11.0