References: golang.org/x/sys/unix.CRYPTO_MSG

const golang.org/x/sys/unix.CRYPTO_MSG_UPDATEALG

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2484: 	CRYPTO_MSG_UPDATEALG = 0x12

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)