Add CHANGES note for [GL #4310]

diff --git a/CHANGES b/CHANGES
index 3af1d9007615a6b09aa39292ffd030999f0e60c9..5699f9da67004bda9c2a8e652510f1a9d07eaf8b 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+6309.  [bug]           Changing a zone's primaries while a refresh was in
+                       progress could trigger an assertion. [GL #4310]
+
 6308.  [bug]           Prevent crashes caused by the zone journal getting
                        destroyed before all changes from an incoming IXFR are
                        written to it. [GL #4496]