Device node creation when major number is dynamically allocated

[Jan Sucan <sucan%runbox.com@localhost>]

Hello,

I am interested in NetBSD kernel and I have written a simple character 
pseudo device driver module which calculates Fibonacii numbers. It works 
but there is something I am not certain of.
I don't know how to create device node without having to know major 
number allocated dynamically when the module is loaded. In earlier 
NetBSD versions (before module(7) framework) there was -p option to 
modload command specifying post-install program. One of the arguments to 
this program was the character device major number.
Now, my module prints the character device major number to system 
console and I use it in mknod command. Is it good approach or there is 
some functionality analogous to the mentioned -p option in current 
NetBSD versions?

Thanks,
Jan