workaround against name servers which return NXDOMAIN/SERVFAIL on IPv4 only

node (the srever server should return acount = 0 without error).
NetBSD PR: 9621

diff --git a/lib/libc/net/getaddrinfo.c b/lib/libc/net/getaddrinfo.c
index 1038ce9..8de6394 100644 (file)
--- a/lib/libc/net/getaddrinfo.c
+++ b/lib/libc/net/getaddrinfo.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: getaddrinfo.c,v 1.16 2000/03/13 12:26:56 itojun Exp $ */
+/*     $OpenBSD: getaddrinfo.c,v 1.17 2000/03/16 14:08:55 itojun Exp $ */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -1545,6 +1545,7 @@ res_queryN(name, target)
                        return (n);
                }
                n = res_send(buf, n, answer, anslen);
+#if 0
                if (n < 0) {
 #ifdef DEBUG
                        if (_res.options & RES_DEBUG)
@@ -1553,8 +1554,9 @@ res_queryN(name, target)
                        h_errno = TRY_AGAIN;
                        return (n);
                }
+#endif
 
-               if (hp->rcode != NOERROR || ntohs(hp->ancount) == 0) {
+               if (n < 0 || hp->rcode != NOERROR || ntohs(hp->ancount) == 0) {
                        rcode = hp->rcode;      /* record most recent error */
 #ifdef DEBUG
                        if (_res.options & RES_DEBUG)