device special files created by sio(4). The latter are the device
special files created by uart(4). As of this moment sio(4) is not
supported on ia64... by me, that is :-)
All functionality from the previous system has been preserved, and
users should still customize their system boot with the familiar
methods, rc.conf, rc.conf.local, rc.firewall, sysctl.conf, etc.
Users who have customized versions of scripts that have been removed
should take great care when upgrading, since the compatibility code
that used those old scripts has also been removed.