[BZ #10128]

2009-05-05 Aurelien Jarno <aurelien@aurel32.net> [BZ #10128] * resolv/res_query.c (__libc_res_nquery): If one query returns NOTIMP or FORMERR and the other NOERROR, don't raise an error.
git-mirror · May 9, 2009 · cf4f16c · cf4f16c
1 parent 23b6b46
commit cf4f16c
Showing 2 changed files with 13 additions and 0 deletions.
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,9 @@
+2009-05-05  Aurelien Jarno  <aurelien@aurel32.net>
+
+	[BZ #10128]
+	* resolv/res_query.c (__libc_res_nquery): If one query returns NOTIMP
+	or FORMERR and the other NOERROR, don't raise an error.
+
 2009-05-06  Ryan S. Arnold  <rsa@us.ibm.com>
 
 	[BZ #10118]

diff --git a/resolv/res_query.c b/resolv/res_query.c
@@ -289,6 +289,13 @@ __libc_res_nquery(res_state statp,
 			break;
 		case FORMERR:
 		case NOTIMP:
+			/* Servers must not reply to AAAA queries with
+			   NOTIMP etc but some of them do.  */
+			if ((hp->rcode == NOERROR && ntohs (hp->ancount) != 0)
+			    || (hp2->rcode == NOERROR
+				&& ntohs (hp2->ancount) != 0))
+				goto success;
+			/* FALLTHROUGH */
 		case REFUSED:
 		default:
 			RES_SET_H_ERRNO(statp, NO_RECOVERY);