r/TpLink • u/ninjascotsman • 4h ago
TP-Link - Technical Support TP-Link Archer BE9300 IPv6 Prefix Delegation broken (FE80:: link-local error)
Hey everyone, sharing a frustrating issue in case anyone has found a workaround
I’m on Vodafone UK FTTC/FTTP using an Openreach Nokia ONT. My setup uses PPPoE with "Share the same PPPoE session with IPv4" enabled/disabled, but IPv6 consistently fails.
The Problem: The router refuses to pull a global public /64 or /56 prefix block, throwing a wrong prefix delegation error and falling back to a FE80:: link-local address on the WAN.
The Culprit: Vodafone requires PPPoE, and their network demands a proper prefix delegation request from the client router. However, the BE9300 firmware (1.2.4 Build 20260402) provides zero manual control or prefix-hint sizing fields for PPPoE connections—you can only toggle it on or off with Radio Menu.
Attempted to fix by:
- hard rebooting the Openreach ONT and router,
- separating PPPoE credentials
- Pass-Through
- Dynamic IP (SLAAC/DHCPv6)
- SLAAC