slattach returns "no such device or address" FC2

[Rob Cartier <rcartier apollo homeip net>]

I was unhappily greeted after upgrading from FC1 to FC2 that slip support
was removed from distributed kernel. So I attempted to add support for slip
in a new custom kernel

I was greeted with

/sbin/slattach -s 38400 -p slip /dev/ptype

slattach: tty_open(/dev/ptype, RW): No such device or address

while I now have slip support in the kernel since I see the slip.ko module
now in my /lib/modules directory I cant seem to get past this error

any ideas would be greatly appreciated

Rob Cartier