Fix #6864 automatically convert IPv6 input to lowercase
1) As the user leaves the field, or presses Save, onChange will fire and convert the input string to lowercase. This saves the user havng to even think about it. 2) Provide some extra text that describes the expected format, to avoid them getting just "Please match the requested format"
(cherry picked from commit d461ff40e364fc0ecc003b9f673cbad7c6a08f2f)
Related issues
Bug #6864: Error checking rejects IPv6 addresses with upper case A-F.
Fix #6864 automatically convert IPv6 input to lowercase
1) As the user leaves the field, or presses Save, onChange will fire and
convert the input string to lowercase. This saves the user havng to even
think about it.
2) Provide some extra text that describes the expected format, to avoid
them getting just "Please match the requested format"
(cherry picked from commit d461ff40e364fc0ecc003b9f673cbad7c6a08f2f)