diff --git a/src/Symfony/Component/HttpFoundation/IpUtils.php b/src/Symfony/Component/HttpFoundation/IpUtils.php
index 3bb33140f5055..86d135b2d3afd 100644
--- a/src/Symfony/Component/HttpFoundation/IpUtils.php
+++ b/src/Symfony/Component/HttpFoundation/IpUtils.php
@@ -123,6 +123,10 @@ public static function checkIp6($requestIp, $ip)
if (false !== strpos($ip, '/')) {
list($address, $netmask) = explode('/', $ip, 2);
+ if ('0' === $netmask) {
+ return (bool) unpack('n*', @inet_pton($address));
+ }
+
if ($netmask < 1 || $netmask > 128) {
return self::$checkedIps[$cacheKey] = false;
}
diff --git a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
index 54cbb5c20672d..7a93f9947262d 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/IpUtilsTest.php
@@ -62,6 +62,8 @@ public function getIpv6Data()
array(false, '2a01:198:603:0:396e:4789:8e99:890f', '::1'),
array(true, '0:0:0:0:0:0:0:1', '::1'),
array(false, '0:0:603:0:396e:4789:8e99:0001', '::1'),
+ array(true, '0:0:603:0:396e:4789:8e99:0001', '::/0'),
+ array(true, '0:0:603:0:396e:4789:8e99:0001', '2a01:198:603:0::/0'),
array(true, '2a01:198:603:0:396e:4789:8e99:890f', array('::1', '2a01:198:603:0::/65')),
array(true, '2a01:198:603:0:396e:4789:8e99:890f', array('2a01:198:603:0::/65', '::1')),
array(false, '2a01:198:603:0:396e:4789:8e99:890f', array('::1', '1a01:198:603:0::/65')),
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