This counter tracks how many outbound packets this module prepared for hash validation, the cryptographic check receivers use to confirm a data block hasn't been tampered with in transit. A rising count here reflects active use of an integrity-checking protocol like IPsec's ESP or AH with HMAC, so an admin trending this can confirm hash-based integrity protection is actually being applied to outbound traffic, not just encryption alone. On a VPN gateway configured with esp-sha-hmac transforms, an admin would expect this counter to track closely with ccaAcclEncryptPkts, since nearly every encrypted outbound packet would also get a hash computed.