Function parse_cidr_ignore_hostbits 

pub fn parse_cidr_ignore_hostbits<C, AP>(
    s: &str,
    address_parser: AP,
) -> Result<C, NetworkParseError>
where
    C: Cidr,
    AP: Fn(&str) -> Result<C::Address, AddrParseError>,

Parse Cidr with custom address parser

Similar to parse_cidr but ignores host bits in addresses.