diff -urN Net_IPv6-1.2.1.org/Net/IPv6.php Net_IPv6-1.2.1/Net/IPv6.php
--- Net_IPv6-1.2.1.org/Net/IPv6.php	2011-02-07 22:41:59.000000000 +0100
+++ Net_IPv6-1.2.1/Net/IPv6.php	2017-12-08 11:59:42.918728932 +0100
@@ -146,7 +146,7 @@
      * @access public
      * @static     
      */
-    function separate($ip) 
+    public static function separate($ip) 
     {
         
         $addr = $ip;
@@ -184,7 +184,7 @@
      * @access public
      * @static
      */
-    function removeNetmaskSpec($ip)
+    public static function removeNetmaskSpec($ip)
     {
 
         $elements = Net_IPv6::separate($ip);
@@ -210,7 +210,7 @@
      * @see removeNetmaskSpec()
      * @deprecated
      */
-    function removePrefixLength($ip)
+    public static function removePrefixLength($ip)
     {
         $pos = strrpos($ip, '/');
 
@@ -236,7 +236,7 @@
      * @access public
      * @static
      */
-    function getNetmaskSpec($ip) 
+    public static function getNetmaskSpec($ip) 
     {
 
         $elements = Net_IPv6::separate($ip);
@@ -262,7 +262,7 @@
      * @static
      * @deprecated
      */
-    function getPrefixLength($ip) 
+    public static function getPrefixLength($ip) 
     {
         if (preg_match("/^([0-9a-fA-F:]{2,39})\/(\d{1,3})*$/", 
                         $ip, $matches)) {
@@ -292,7 +292,7 @@
      * @access public
      * @static
      */
-    function getNetmask($ip, $bits = null)
+    public static function getNetmask($ip, $bits = null)
     {
         if (null==$bits) {
 
@@ -342,7 +342,7 @@
      * @access public
      * @static
      */
-    function isInNetmask($ip, $netmask, $bits=null)
+    public static function isInNetmask($ip, $netmask, $bits=null)
     {
         // try to get the bit count
 
@@ -425,7 +425,7 @@
      * @see    NET_IPV6_LOOPBACK  
      * @see    NET_IPV6_UNKNOWN_TYPE
      */
-    function getAddressType($ip) 
+    public static function getAddressType($ip) 
     {
         $ip    = Net_IPv6::removeNetmaskSpec($ip);
         $binip = Net_IPv6::_ip2Bin($ip);
@@ -508,7 +508,7 @@
      * Uncompresses an IPv6 adress
      *
      * RFC 2373 allows you to compress zeros in an adress to '::'. This
-     * function expects an valid IPv6 adress and expands the '::' to
+     * public static function expects an valid IPv6 adress and expands the '::' to
      * the required zeros.
      *
      * Example:  FF01::101  ->  FF01:0:0:0:0:0:0:101
@@ -526,7 +526,7 @@
      * @static
      * @author Pascal Uhlmann
      */
-    function uncompress($ip, $leadingZeros = false)
+    public static function uncompress($ip, $leadingZeros = false)
     {
 
         $prefix = Net_IPv6::getPrefixLength($ip);
@@ -648,7 +648,7 @@
      * Compresses an IPv6 adress
      *
      * RFC 2373 allows you to compress zeros in an adress to '::'. This
-     * function expects an valid IPv6 adress and compresses successive zeros
+     * public static function expects an valid IPv6 adress and compresses successive zeros
      * to '::'
      *
      * Example:  FF01:0:0:0:0:0:0:101   -> FF01::101
@@ -672,7 +672,7 @@
      * @static
      * @author elfrink at introweb dot nl
      */
-    function compress($ip, $force = false)  
+    public static function compress($ip, $force = false)  
     {
         
         if(false !== strpos($ip, '::')) { // its already compressed
@@ -762,7 +762,7 @@
      * @static
      * @author Manuel Schmitt
      */
-    function isCompressible($ip) 
+    public static function isCompressible($ip) 
     {
 
         return (bool)($ip != Net_IPv6::compress($address));
@@ -790,7 +790,7 @@
      * @access public
      * @static
      */
-    function SplitV64($ip, $uncompress = true)
+    public static function SplitV64($ip, $uncompress = true)
     {
         $ip = Net_IPv6::removeNetmaskSpec($ip);
 
@@ -829,7 +829,7 @@
      * @access public
      * @static
      */
-    function checkIPv6($ip)
+    public static function checkIPv6($ip)
     {
         $ip = Net_IPv6::removePrefixLength($ip);
         $ip = Net_IPv6::removeNetmaskSpec($ip);
@@ -926,7 +926,7 @@
      * @author Nicholas Williams
      */
 
-    function parseAddress($ipToParse, $bits = null)
+    public static function parseAddress($ipToParse, $bits = null)
     {
 
         $ip      = null;
@@ -982,7 +982,7 @@
      * @access private
      @ @since 1.1.0
      */
-    function _ip2Bin($ip) 
+    protected static function _ip2Bin($ip) 
     {
         $binstr = '';
 
@@ -1013,7 +1013,7 @@
      * @access private
      @ @since 1.1.0
      */
-    function _bin2Ip($bin)
+    protected static function _bin2Ip($bin)
     {
         $ip = "";