Hi

Singapore ISP StarHub has just provision a new broadband line into my house with TP-Link HB710.

I noticed that IPv4 works perfectly but not IPv6 on my android phone (S25 Ultra using the December 2025 firmware). All other android phone (Xiaomi, and other Samsung model also same result).

My S25 Ultra is able to received the IPv6 global address from HB710 but without IPv6 default gateway and IPv6 DNS server ip address but Windows 11 laptop works perfectly and is able to obtain the IPv6 default gateway and IPv6 DNS server ip address.

Please advise how to fix it for android phones for IPv6.

Thanks