backport regression test from GL #3157

add "blackhole { none; };" to a secondary server in the xfer system
test to ensure that the error in GL #3157 is not present in 9.16.

diff --git a/bin/tests/system/xfer/ns4/named.conf.base b/bin/tests/system/xfer/ns4/named.conf.base
index 395f80c580555a8695aa6098cf5f5c20bae64dbc..8e77d0cd7d1bce580457e3a38c9e249f956ff7a9 100644 (file)
--- a/bin/tests/system/xfer/ns4/named.conf.base
+++ b/bin/tests/system/xfer/ns4/named.conf.base
@@ -21,6 +21,7 @@ options {
        listen-on-v6 { none; };
        recursion no;
        notify yes;
+       blackhole { none; };
 };
 
 key rndc_key {