Losing IPv6 after a few days

Router: Archer C6 V3
Onu: Tplink xz000-g3
Firmware: OpenWrt 24.10.5

After a few days my IPv6 stopped working but only on LAN network (WAN ok fine), even with factory settings this happens, Sometimes IPv6 works for 7 days, sometimes for 2 days before failing ...

I have valid IPv4 / ipv6 addresses.

Does the ISP change your prefix?

1 Like

No, still same /64

Update: I just noticed that IPv6 stopped working and that "Lease time remaining" now shows "Expired"

Where are you seeing that message?

How is your ISP providing you your IPv6 prefix? DHCPv6-PD?

How have you configured it?

I was experiencing the same problem on the LAN side, but I haven't had any issues since I changed IPv6 to 64.

IPv6 assignment length
64
▾
Assign a part of given length of every public IPv6-prefix to this interface