[1.6.x] Added note to GenericIPAddressField documentation
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``192.0.2.1``. Default is disabled. Can only be used
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``192.0.2.1``. Default is disabled. Can only be used
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when ``protocol`` is set to ``'both'``.
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when ``protocol`` is set to ``'both'``.
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If you allow for blank values, you have to allow for null values since blank
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values are stored as null.
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``NullBooleanField``
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``NullBooleanField``
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--------------------
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--------------------
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