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From: Jesse Glick <jglick@cloudbees.com>
To: dnsmasq-discuss@lists.thekelleys.org.uk
Subject: Re: [Dnsmasq-discuss] Ability to delegate to one server but fall
back to another after NXDOMAIN?
On Wed, Jan 15, 2014 at 12:30 PM, Simon Kelley <simon@thekelleys.org.uk> wrote:
> > There's a (very old) patch in contrib/try-all-ns that would make a starting point
This does not apply against trunk, so I tried to rework it. The
following appears to do what I expect:
diff --git a/src/forward.c b/src/forward.c
index 8167229..76070b5 100644
--- a/src/forward.c
+++ b/src/forward.c
@@ -610,7 +610,11 @@ void reply_query(int fd, int family, time_t now)
if ((RCODE(header) == SERVFAIL || RCODE(header) == REFUSED) &&
!option_bool(OPT_ORDER) &&
- forward->forwardall == 0)
+ forward->forwardall == 0 ||
+ /* try each in turn */
+ RCODE(header) == NXDOMAIN &&
+ option_bool(OPT_ORDER) &&
+ server->next != NULL)
/* for broken servers, attempt to send to another one. */
{
unsigned char *pheader;
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