So what interesting "features" have you found with LNM?
The first one I have found is during setup where it want's me to specify IP addresses for the DHCP scope. I just ran the installer on a spare machine to see what it's like, I left it with the defult DHCP settings it came up with:
Start IP: 192.168.0.50
End IP: 192.168.0.254
Then when I press next it says that the End IP must be higher than the Start IP!
Changed the Start to 192.168.0.10 and the end to 192.168.0.200 and it works, maybe it's only validating the IP address by the 1st digit in the fourth octet?