nl_tokens: turns a dotted - decimal address into a UInt32
pl_tokens: function parseIPv4 ( addr ) { if ( typeof ( addr ) !== 'string' ) throw <mask> TypeError ( 'addr (string) is required' ) ; var octets = addr . split ( / \. / ) . map ( function ( octet ) { return ( parseInt ( octet , 10 ) ) ; } ) ; if ( octets . length !== 4 ) throw new TypeError ( 'valid IP address required' ) ; var uint32 = ( ( octets [ 0 ] * Math . pow ( 256 , 3 ) ) + ( octets [ 1 ] * Math . pow ( 256 , 2 ) ) + ( octets [ 2 ] * 256 ) + octets [ 3 ] ) ; return ( uint32 ) ; }