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[Validator] Add note to version option in Cidr constraint #20550

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Jan 9, 2025
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[Validator] Add note to version option in Cidr constraint #20550

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6 changes: 6 additions & 0 deletions reference/constraints/Cidr.rst
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Expand Up @@ -126,6 +126,12 @@ Parameter Description
This determines exactly *how* the CIDR notation is validated and can take one
of :ref:`IP version ranges <reference-constraint-ip-version>`.

.. note::

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, ``9.0.0.0/6`` 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.
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