Subject: EDNS version and ENTRY_IS_DEAD collide
MIME-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
X-Mailer: MIME-tools 5.428 (Entity 5.428)
Content-Disposition: inline
Content-Transfer-Encoding: binary
X-RT-Original-Encoding: utf-8
Content-Length: 150

This leads to ENTRY_IS_DEAD being cleared by mistake when the EDNS
version is recorded and max-cache-size is set (results in ENTRY_IS_DEAD
being set).