explain why network.conf still has "the long names"

infrastructure/db/network.conf

@@ -1,4 +1,11 @@
-# $OpenBSD: network.conf,v 1.21 2023/07/19 11:13:16 sthen Exp $
+# $OpenBSD: network.conf,v 1.22 2023/09/05 14:02:44 espie Exp $
+
+# XXX the framework is currently converted from MASTER_SITE -> SITE
+# internally, variables like SITE_OPENBSD, SITE_GCC will be filled
+# automatically, so DO NOT USE the long version in your new Makefiles.
+#
+# Due to the way the magic is working, this file will probably be converted
+# last !
 
 # List of OpenBSD sites
 MASTER_SITE_OPENBSD ?= \