- Added comment in my global SSH config for pointing the known hosts file to /dev/null.

.ssh/config.d/10_global

@@ -4,3 +4,4 @@ ControlPath ~/.ssh/controlmaster-%r@%h:%p
 ControlPersist 3m
 ServerAliveInterval 30
 #StrictHostKeyChecking yes
+#UserKnownHostsFile=/dev/null