From 57cf89b149a6c4a9794c24613f9b765e02a54b2f Mon Sep 17 00:00:00 2001
From: Andreas Gustafsson <source@isc.org>
Date: Fri, 30 Jul 1999 13:33:14 +0000
Subject: [PATCH] set msg->rdclass even if question section is empty

---
 lib/dns/message.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lib/dns/message.c b/lib/dns/message.c
index b1b9a564fe..819bdfd00b 100644
--- a/lib/dns/message.c
+++ b/lib/dns/message.c
@@ -923,6 +923,17 @@ getsection(isc_buffer_t *source, dns_message_t *msg, dns_decompress_t *dctx,
 		rdtype = isc_buffer_getuint16(source);
 		rdclass = isc_buffer_getuint16(source);
 
+		/*
+		 * If there was no question section, we may not yet have
+		 * established a class.  Do so now.
+		 */
+		if (msg->state == DNS_SECTION_ANY) {
+			if (rdclass == 0 || rdclass == dns_rdataclass_any)
+				return (DNS_R_FORMERR);
+			msg->rdclass = rdclass;
+			msg->state = DNS_SECTION_QUESTION;
+		}
+		   
 		/*
 		 * If this class is different than the one in the question
 		 * section, bail.