global Check4 (string netmask) -> boolean

Check the IPv4 netmask Note that 0.0.0.0 is not a correct netmask.

Parameters:

netmask

network mask

Return value:

true if correct

global Check6 (string netmask) -> boolean

Check the IPv6 netmask

Parameters:

netmask

network mask

Return value:

true if correct

global Check (string netmask) -> boolean

Check the netmask

Parameters:

netmask

network mask

Return value:

true if correct

global FromBits (integer bits) -> string

Convert netmask in bits form (20) to netmask string (255.255.240.0)

Parameters:

bits	number of bits in netmask

Return value:

netmask string

global ToBits (string netmask) -> integer

Convert IPv4 netmask as string (255.255.240.0) to bits form (20)

Parameters:

netmask

netmask as string

Return value:

number of bits in netmask; 32 for empty string