* Add option length check.
* Check buffer boundary in option status code
* Reduce array size in prvDHCPv6_handleStatusCode.
* Cast structure type for xApplicationDHCPHook_Multi.
* Use IP_Address_t in DHCPMessage_IPv6_t and fix coverity.
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Co-authored-by: Monika Singh <108652024+moninom1@users.noreply.github.com>