From: Haw Loeung <haw.loeung@canonical.com>
Date: Fri, 15 Aug 2014 02:25:20 +0000 (+1000)
Subject: Fixed to consider IPv6 nameservers and to also handle case where only IPv6 nameserver... 
X-Git-Tag: v0.86~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f45352dcb7e92471edd0e69de950c30e78d00424;p=thirdparty%2Fmtr.git

Fixed to consider IPv6 nameservers and to also handle case where only IPv6 nameservers are specified.
---

diff --git a/dns.c b/dns.c
index 32b83c2..21ab60a 100644
--- a/dns.c
+++ b/dns.c
@@ -509,11 +509,16 @@ int dns_waitfd6(void)
 
 void dns_open(void)
 {
-  int option,i;
+  int option,i,nscount;
 
   if (!dns) return;
   MY_RES_INIT();
-  if (!myres.nscount) {
+#ifdef ENABLE_IPV6
+  nscount = myres.nscount + myres._u._ext.nscount6;
+#else
+  nscount = myres.nscount;
+#endif
+  if (!nscount) {
     fprintf(stderr,"No nameservers defined.\n");
     exit(-1);
   }