During the migration from the kernel 2.4 to the kernel 2.6 I've got problems
with soft-modem (slamr) on my notebook IBM Thinkpad R31. The core problem was in
the major mode for the /dev/slamr* devices. For the kernel 2.4 they had major
mode number 212, but for the kernel 2.6 they must have the number 242. Therefore
I found the problems in the standard MAKEDEV and udev configurations.

I'm not sure, that the mode must be 242 for standard configuration files, but I
found the devices in MAKEDEV's configuration file linux-2.4.x. Surely, I fixed
my problem just writing 242 for slamr in the file linux-2.4.x, but it is not
seems pretty good. Maybe, a special configuration file linux-2.6.x is necessary?

The same question is for the configuration of udev.

One may see details in the maillist:

http://lists.altlinux.org/pipermail/community/2006-November/185774.html
Steps to Reproduce:
See the configuration files for MAKEDEV
Actual Results:  
There is file linux-2.4.x, but there is no files like linux-2.6.x

Expected Results:  
I think, both linux-2.4.x and linux-2.6.x are necessary, or, at least, the
latter one.