openwrt/package/network/services/dnsmasq/patches/0005-Retry-query-to-other-servers-on-receipt-of-SERVFAIL-.patch

From 34e26e14c5e0fb2d5f05f67858319c9db2058333 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Thu, 10 May 2018 20:54:57 +0100
Subject: [PATCH 05/10] Retry query to other servers on receipt of SERVFAIL
 rcode.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
---
 src/forward.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/src/forward.c
+++ b/src/forward.c
@@ -817,7 +817,7 @@ void reply_query(int fd, int family, tim
 
   /* Note: if we send extra options in the EDNS0 header, we can't recreate
      the query from the reply. */
-  if (RCODE(header) == REFUSED &&
+  if ((RCODE(header) == REFUSED || RCODE(header) == SERVFAIL) &&
       forward->forwardall == 0 &&
       !(forward->flags & FREC_HAS_EXTRADATA))
     /* for broken servers, attempt to send to another one. */
dnsmasq: bump to 2.80test2 Refresh patches and backport upstream to current HEAD: 1f1873a Log warning on very large cachesize config, instead of truncating it. 0a496f0 Do unsolicited RAs for interfaces which appear after dnsmasq startup. e27825b Fix logging in previous. 1f60a18 Retry SERVFAIL DNSSEC queries to a different server, if possible. a0088e8 Handle query retry on REFUSED or SERVFAIL for DNSSEC-generated queries. 34e26e1 Retry query to other servers on receipt of SERVFAIL rcode. 6b17335 Add packet-dump debugging facility. 07ed585 Add logging for DNS error returns from upstream and local configuration. 0669ee7 Fix DHCP broken-ness when --no-ping AND --dhcp-sequential-ip are set. f84e674 Be persistent with broken-upstream-DNSSEC warnings. Compile & run tested: ar71xx Archer C7 v2 Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> 2018-05-12 14:37:33 +00:00			`From 34e26e14c5e0fb2d5f05f67858319c9db2058333 Mon Sep 17 00:00:00 2001`
			`From: Simon Kelley <simon@thekelleys.org.uk>`
			`Date: Thu, 10 May 2018 20:54:57 +0100`
			`Subject: [PATCH 05/10] Retry query to other servers on receipt of SERVFAIL`
			`rcode.`

			`Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>`
			`---`
			`src/forward.c \| 2 +-`
			`1 file changed, 1 insertion(+), 1 deletion(-)`

			`--- a/src/forward.c`
			`+++ b/src/forward.c`
			`@@ -817,7 +817,7 @@ void reply_query(int fd, int family, tim`

			`/* Note: if we send extra options in the EDNS0 header, we can't recreate`
			`the query from the reply. */`
			`- if (RCODE(header) == REFUSED &&`
			`+ if ((RCODE(header) == REFUSED \|\| RCODE(header) == SERVFAIL) &&`
			`forward->forwardall == 0 &&`
			`!(forward->flags & FREC_HAS_EXTRADATA))`
			`/* for broken servers, attempt to send to another one. */`