Ocfs2 users - Mar 2010 - Debian + DRBD + OCFS2

Hello.

What is the right way to make a ocfs2 mount at the boot time at debian 
lenny?
If I just add it to fstab:
/dev/drbd0      /mnt/drbd0      ocfs2   _netdev      0       0

It failt to mount because it runs before DRBD.

-- 
Best regards,
Proskurin Kirill