ax3004itl is purchased on the 16th of last month and used it for about a week. as it is used with a8004t, the ax3004itl is allow or un-allow by KT DNS, DHCP as the title suggests, and the internet coonnection stable and unstable. installing it in front of the a8004t makes the internet stable. ax3004itl is in front of used well 10 days . but, so you need to firmware update. soluble keying : Easy Mesh function is a8004t main operating. Please reply ASA Pssible. Thank you.