IPv6 prefix present (/56) but no IPv6 in Home segment (KN-2311, KeeneticOS 4.3.6.3)

[Artem K]

Hi,

I have a Keenetic Hero 4G+ (KN-2311, EU) running KeeneticOS 4.3.6.3.
On the System Dashboard, I can see:

• an IPv6 address on the WAN interface
• a delegated IPv6 prefix (/56)

However, in My networks → Home segment, there are:

• no IPv6 settings (no "Enable IPv6" option)
• no IPv6 connectivity on LAN devices

Topology:

• Hero 4G+ is the main router
• Connected via Ethernet to ISP optical converter
• PPPoE connection configured (IPv4 + IPv6 both set to "Automatic")
• VLAN ID 42 configured on Internet interface in "Ports and VLANs"
• Mesh enabled with Hopper (KN-3810), Hero is the controller

Questions:

1. How do I enable IPv6 on the Home segment?
2. Should IPv6 settings appear automatically when a delegated prefix (/56) is received?
3. Could mesh mode or segment configuration prevent IPv6 options from appearing?

It seems like IPv6 is working on WAN, but not being distributed to LAN, and the UI does not expose any IPv6-related settings for the Home segment.
Any guidance would be appreciated.

Thanks!

[Artem K]

With the upgrade to the latest firmware (5.0.8), the issue did not magically resolve. Instead, the IPv6 configuration, provided by the IPS (address, prefix and DNSes) now vanished from the Web interface Dashboard section. Seems like some incompatibility with the provider. Same ISP works fine with Huawei and Ubiquiti. Consequences of choosing a niche vendor, I guess.

[Artem K]

And after some interactions with Chat GPT and providing it output of different commands from CLI, it says: 

Facts from your live output:
* PPPoE0 has IPv6 enabled and has a global IPv6 address.
* show ipv6 prefixes previously showed a delegated /56 on PPPoE0.
* show ipv6 subnets previously showed a /64 from that /56 applied to Home.
* show interface PPPoE0 still says ipv6 defaultgw: no.
* show ipv6 route still has no ::/0 default IPv6 route via PPPoE0.
* ping6 works from UsbLte0, but fails from PPPoE0 with network unreachable. The manual’s ping6 syntax uses source, which you used correctly here.

So the exact diagnosis is:
* Prefix delegation on PPPoE works, but IPv6 default routing on PPPoE does not.

Edited April 18 by Artem K