Hi,
As far as I know, to exclude the range of IP address in a subnet is to
split the address range of subnet into two.
Example:
subnet 1.1.1.0 netmask 255.255.255.0
{
range 1.1.1.10 1.1.1.15
range 1.1.1.21 1.1.1.40
}
so in the above example automatically the IP 16-20 will be excluded
from the list.