464xlat

hi, i using GT-AX-11000 with latest Asus Merlin firmware. and asus router connected with 5G CPE router with Bridge Mode. my sim internet is ipv6 only internet. so, need 464XLAT. i tested 464XLAT with openwrt and it's working fine. so, how to configure 464XLAT with asus Merlin in router mode...