[2016-08-30 12:58 UTC] mrowiec dot adam at gmail dot com

Description:
------------
You made the bug in the commit:

https://github.com/php/php-src/commit/6fc7817558db2016b160277e410381f286fe127a


Because, You have bad ranges for the flags in IPv4.

FILTER_FLAG_NO_RES_RANGE - Range reserved by protocol:

0.0.0.0/8
240.0.0.0/4
127.0.0.0/8
169.254.0.0/16

This filter should return false only for this ranges

FILTER_FLAG_NO_PRIV_RANGE - Range use for private network:

10.0.0.0/8
172.16.0.0/12
192.168.0.0/16

This filter should return false only for this ranges

Look in rfc6890:

https://tools.ietf.org/html/rfc6890

And your documentation is not actual:

http://www.php.net/filter.filters.flags

Test script:
---------------
var_dump(filter_var('192.168.0.1', FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_RES_RANGE));
var_dump(filter_var('169.254.0.1', FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE));

Expected result:
----------------
string(11) "192.168.0.1"
string(11) "169.254.0.1"

Actual result:
--------------
bool(false)
bool(false)