| A cidr-range is an ip-address followed by a slash '/', | |
| the followed by a decimal number in the range [0..31] | |
| The cidr-range identifes both a single ip address, and | |
| a range of ip-address, the trailing number describes | |
| a netmask, the number indicates the length of 1-bits | |
| within the mask. Examples: 192.168.1.1/25, and | |
| 10.0.0.65/24 |