The command ip nat pool has two other options. First, instead of using the netmask syntax,
you can use the prefix-length command followed by the number of bits in the mask, which
indicates how many bits are ones. In this case, 24 indicates your netmask. You can also use
type rotary after the netmask to enable TCP load distribution. This indicates that the IP
addresses in the pool are real inside hosts that can be used for TCP load distribution. Second,
you can use the parameter match-host, which attempts to match the host portion of the IP
address to be translated to the same host number in the translated IP address. This is useful for
quickly finding which internal host a translated IP address belongs to, but you must have at
least a one-to-one relationship between local and global addresses.