1 files changed, 19 insertions, 17 deletions

diff --git a/src/network/res_msend.c b/src/network/res_msend.c
index 11c6aa0e..86c2fcf4 100644
--- a/src/network/res_msend.c
+++ b/src/network/res_msend.c
@@ -25,7 +25,8 @@ static void cleanup(void *p)
 static unsigned long mtime()
 {
 	struct timespec ts;
-	clock_gettime(CLOCK_REALTIME, &ts);
+	if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0 && errno == ENOSYS)
+		clock_gettime(CLOCK_REALTIME, &ts);
 	return (unsigned long)ts.tv_sec * 1000
 		+ ts.tv_nsec / 1000000;
 }
@@ -132,6 +133,22 @@ int __res_msend_rc(int nqueries, const unsigned char *const *queries,
 		family = AF_INET;
 		sl = sizeof sa.sin;
 	}
+
+	/* Convert any IPv4 addresses in a mixed environment to v4-mapped */
+	if (fd >= 0 && family == AF_INET6) {
+		setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &(int){0}, sizeof 0);
+		for (i=0; i<nns; i++) {
+			if (ns[i].sin.sin_family != AF_INET) continue;
+			memcpy(ns[i].sin6.sin6_addr.s6_addr+12,
+				&ns[i].sin.sin_addr, 4);
+			memcpy(ns[i].sin6.sin6_addr.s6_addr,
+				"\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
+			ns[i].sin6.sin6_family = AF_INET6;
+			ns[i].sin6.sin6_flowinfo = 0;
+			ns[i].sin6.sin6_scope_id = 0;
+		}
+	}
+
 	sa.sin.sin_family = family;
 	if (fd < 0 || bind(fd, (void *)&sa, sl) < 0) {
 		if (fd >= 0) close(fd);
@@ -151,21 +168,6 @@ int __res_msend_rc(int nqueries, const unsigned char *const *queries,
 	pthread_cleanup_push(cleanup, pfd);
 	pthread_setcancelstate(cs, 0);
 
-	/* Convert any IPv4 addresses in a mixed environment to v4-mapped */
-	if (family == AF_INET6) {
-		setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &(int){0}, sizeof 0);
-		for (i=0; i<nns; i++) {
-			if (ns[i].sin.sin_family != AF_INET) continue;
-			memcpy(ns[i].sin6.sin6_addr.s6_addr+12,
-				&ns[i].sin.sin_addr, 4);
-			memcpy(ns[i].sin6.sin6_addr.s6_addr,
-				"\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
-			ns[i].sin6.sin6_family = AF_INET6;
-			ns[i].sin6.sin6_flowinfo = 0;
-			ns[i].sin6.sin6_scope_id = 0;
-		}
-	}
-
 	memset(alens, 0, sizeof *alens * nqueries);
 
 	retry_interval = timeout / attempts;
@@ -286,7 +288,7 @@ int __res_msend_rc(int nqueries, const unsigned char *const *queries,
 			};
 			step_mh(&mh, apos[i]);
 			r = recvmsg(pfd[i].fd, &mh, 0);
-			if (r < 0) goto out;
+			if (r <= 0) goto out;
 			apos[i] += r;
 			if (apos[i] < 2) continue;
 			int alen = alen_buf[i][0]*256 + alen_buf[i][1];