added FAQ about rndc attempting to use IPv6

diff --git a/FAQ b/FAQ
index fc12faebdc7efaeb027daf989b1de3fb4173eec5..47d3015e22987761f8a90883de887c0b1eeee1d4 100644 (file)
--- a/FAQ
+++ b/FAQ
@@ -253,3 +253,15 @@ use those to make sure you reach the correct view on the other machine.
 
        You put the external address on the alias so that all the other
        dns clients on these boxes see the internal view by default.
+
+
+Q: When I try to use rndc, I get the error message "network
+unreachable" or "connection refused", even though I know named is
+running.
+
+A: You probably have "default-server localhost" in /etc/rndc.conf,
+your /etc/hosts or DNS maps "localhost" to both the IPv4 loopback
+address 127.0.0.1 and the IPv6 loopback address ::1, and you do not
+have IPv6 fully operational.  Change the "default-server localhost" to
+"default-server 127.0.0.1" to make sure rdnc does not try to contact
+the name server using IPv6.