modification.
To enable the inetd.conf compatibility mode, you can edit
-/etc/default/xinetd and add -inetd_compat to XINETD_OPTS
+/etc/default/xinetd and add -inetd_compat or -inetd_ipv6 to XINETD_OPTS
However, you will want to put some services' configurations in xinetd.conf to
customize them.