- $pref_hex = ceil($pref / 4)*4; //Prefix rounded up to full octets
- $pref_rem = $pref_hex - $pref; //Remainder of prefix
- echo("Rounding prefix: ".$pref_hex."-".$pref_rem."\n");
+ $pref_hex = ceil($pref / 4); //Number of prefix octets
+ $pref_bin = $pref_hex*4; //Number of prefix octets in bits
+ $pref_rem = $pref_bin - $pref; //Remainder of prefix
+ echo("Rounding prefix: ".$pref_bin."-".$pref_rem."\n");