+ Once that is done, the server can be run from an unpriviledged user
+account.
+
+
+3. UPGRADING
+
+ The installation process will not over-write your existing
+configuration files. It will, however, warn you about the files it
+did not install.
+
+ For users upgrading from 1.x to 2.0, we STRONGLY recommend that 2.0
+be installed in a different location than the existing 1.x
+installation. Any local policies can then be migrated gradually to
+the new 2.0 configuration. While we have put a lot of time into
+ensuring that 2.0 is mostly backwards compatible with 1.x, it is not
+COMPLETELY backwards compatible. There are differences that mean it
+is simpler and safer to migrate your configurations.
+
+ If you are upgrading an existing installation, please be aware that
+at least one default virtual server SHOULD be used. If you don't need
+virtual servers, your configuration can remain mostly unchanged.
+
+ If you do need virtual servers, we recommend creating a default one
+by editing radiusd.conf, and wrapping all of the authorize,
+authenticate, etc. sections in one server block, as follows:
+
+...
+ server { # line to add
+ authorize {
+ ...
+ }
+ authenticate {
+ ...
+ }
+ accounting {
+ ...
+ }
+ ...
+ post-proxy {
+ ...
+ }
+ } # matching line to add
+...
+
+
+4. CUSTOM INSTALLATION