To be completely clear, rebuild a kernel with this diff and try it:
Index: GENERIC
===================================================================
RCS file: /cvsroot/src/sys/arch/alpha/conf/GENERIC,v
retrieving revision 1.375
diff -u -r1.375 GENERIC
--- GENERIC 13 Dec 2016 20:42:16 -0000 1.375
+++ GENERIC 20 Jul 2017 08:19:11 -0000
@@ -170,7 +170,7 @@
# Loadable Kernel Modules
# Disable kernel security.
-#options INSECURE
+options INSECURE
# Misc. options
options EISAVERBOSE # recognize "unknown" EISA devices
