[ENBD] Problem loading module

[Mike Zimmerman]

I'm having a problem loading the nbd module. The logs report this:

Jan 11 19:37:38 yang kernel: NBD #4729[0]: nbd_init Network Block Device 
support by pavel@elf.mj.gts.cz
Jan 11 19:37:38 yang kernel: NBD #4730[0]: nbd_init Network Block Device 
port to 2.0 by ptb@it.uc3m.es
Jan 11 19:37:38 yang kernel: NBD #4731[0]: nbd_init Network Block Device 
move networking to user space by amarin@it.uc3m.es
Jan 11 19:37:38 yang kernel: NBD #4733[0]: nbd_init Enhanced Network Block 
Device 2.4.27 $Date: 2001/12/06 17:16:43 $ by ptb@it.uc3m.es
Jan 11 19:37:38 yang kernel: NBD #4740[0]: nbd_init Unable to register 
major number 43 for NBD

Can someone give me some insight as to what is causing this?

(Kernel version 2.4.17).