[PATCH] use ipv4 if the ipv6 address cant be reached

Fall back to ipv4 if the host has an ipv6 address,
but doesnt respond to ipv6 right now.
This change worked for us.

https://bugzilla.novell.com/show_bug.cgi?id=193350

---
 subversion/libsvn_ra_svn/client.c |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
--- a/subversion/libsvn_ra_svn/client.c
+++ b/subversion/libsvn_ra_svn/client.c
@@ -145,10 +145,30 @@ static svn_error_t *make_connection(cons
     return svn_error_wrap_apr(status, _("Can't create socket"));
 
   status = apr_socket_connect(*sock, sa);
+  if (!status)
+	  goto out;
+  if (sa->family == APR_INET6) {
+    status = apr_sockaddr_info_get(&sa, hostname, APR_INET, port, 0, pool);
+    if (status)
+      return svn_error_createf(status, NULL, _("Unknown hostname '%s'"),
+                               hostname);
+#ifdef MAX_SECS_TO_LINGER
+    /* ### old APR interface */
+    status = apr_socket_create(sock, sa->family, SOCK_STREAM, pool);
+#else
+    status = apr_socket_create(sock, sa->family, SOCK_STREAM, APR_PROTO_TCP,
+                               pool);
+#endif
+    if (status)
+      return svn_error_wrap_apr(status, _("Can't create socket"));
+
+    status = apr_socket_connect(*sock, sa);
+  }
   if (status)
     return svn_error_wrap_apr(status, _("Can't connect to host '%s'"),
                               hostname);
 
+out:
   return SVN_NO_ERROR;
 }
 
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