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From: Hajimu UMEMOTO <ume@FreeBSD.org>
Date: Mon, 23 Jun 2014 15:43:27 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r267800 - head/lib/libc/net
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Author: ume
Date: Mon Jun 23 15:43:27 2014
New Revision: 267800
URL: http://svnweb.freebsd.org/changeset/base/267800

Log:
  Exclude IPv4 address from doing longest match.
  It prevented DNS based load balancing.
  
  MFC after:	1 week

Modified:
  head/lib/libc/net/getaddrinfo.c

Modified: head/lib/libc/net/getaddrinfo.c
==============================================================================
--- head/lib/libc/net/getaddrinfo.c	Mon Jun 23 15:04:32 2014	(r267799)
+++ head/lib/libc/net/getaddrinfo.c	Mon Jun 23 15:43:27 2014	(r267800)
@@ -1009,7 +1009,8 @@ comp_dst(const void *arg1, const void *a
 	 * We compare the match length in a same AF only.
 	 */
 	if (dst1->aio_ai->ai_addr->sa_family ==
-	    dst2->aio_ai->ai_addr->sa_family) {
+	    dst2->aio_ai->ai_addr->sa_family &&
+	    dst1->aio_ai->ai_addr->sa_family != AF_INET) {
 		if (dst1->aio_matchlen > dst2->aio_matchlen) {
 			return(-1);
 		}