now run on any interface.
- Add a new ifconfig_<ifn> keyword, NOAUTO which prevents configuration
of an interface at boot or via /etc/pccard_ether. This allows
/etc/rc.d/netif to be used to start and stop an interface on a purely
manual basis. The decision to affect pccard_ether may be revisited at
a later date.
Requested by: imp, gallatin (removable_interfaces)
Discussed with: sam, Randy Bush (NOAUTO)