A string composed of the Ip as well as an optional mask, separated by a slash (/). The Ip may be the network address, and also the mask could be whether single number, meaning it’s a prefix, or perhaps a string representation of the IPv4 address. If it is the second, the mask is construed like a internet mask if it comes down to a non-zero field, or like a host mask if it comes down to a zero field, using the single exception of an exciting-zero mask that is treated like a internet mask. If no mask is supplied, it’s regarded as /32.