- // IPv6 loopback address
- $m = array();
- if ( preg_match( '/^0*' . RE_IPV6_GAP . '1$/', $addr, $m ) )
- return '127.0.0.1';
+ // Annoying IPv6 representations like ::ffff:1.2.3.4
+ if ( strpos($addr,':') !==false && strpos($addr,'.') !==false ) {
+ $addr = str_replace( '.', ':', $addr );
+ if( IP::isIPv6( $addr ) )
+ return $addr;
+ }
+
+ // IPv6 loopback address
+ $m = array();
+ if ( preg_match( '/^0*' . RE_IPV6_GAP . '1$/', $addr, $m ) )
+ return '127.0.0.1';