Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of D. Boral ARC Acquisition I Corp.(the “Company”) for the quarterly period ended September 30, 2025, as filed with the Securities and Exchange Commission (the “Report”), I, John Darwin, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

	1.	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

	2.	To my knowledge, the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of and for the period covered by the report.

Date: November 5, 2025	By:	/s/ John Darwin
		John Darwin
		Chief Financial Officer
		(Principal Financial Officer)

D. Boral ARC Acquisition I Corp. 10-Q