This determines exactly *how* the CIDR notation is validated and can take one

of:ref:`IP version ranges<reference-constraint-ip-version>`.

..note::

Be aware IP range (``*_private``, ``*_reserved``) is only validating against IP, but not the whole

netmask. You need to set the ``{{ min }}`` value for the netmask to harden the validation a bit.

For example, ``9.0.0.0/7`` results to be ``*_public``, but also uses ``10.0.0.0/8`` range (``*_private``).

..versionadded::7.1

The support of all IP version ranges was introduced in Symfony 7.1.