Add release note for GL #4986

diff --git a/doc/notes/notes-9.21.3.rst b/doc/notes/notes-9.21.3.rst
index 53d21561e9890a8f73ff28b76c8b084196de8f30..d9e3d843e4c1dac66684186f5ba63d6435266781 100644 (file)
--- a/doc/notes/notes-9.21.3.rst
+++ b/doc/notes/notes-9.21.3.rst
@@ -170,6 +170,8 @@ Bug Fixes
 - Fix a race condition when canceling ADB find which could cause an assertion
   failure. :gl:`#5024`
 
+- Fix doubled memory usage during incoming zone transfer. :gl:`#4986`
+
 - SERVFAIL cache memory cleaning is now more aggressive; it no longer consumes a
   lot of memory if the server encounters many SERVFAILs at once.
   :gl:`#5025`