Embedded scope mismatch

[edz]

I posted this in the IPv6 forum, posting it here too as it seems to have occurred after upgrading to 2.4.5.

I'm seeing the below error in my system log repeated twice every 10-20 seconds,

kernel		sa6_recoverscope: embedded scope mismatch: fe80:3::be30:d9ff:fee6:328d%1. sin6_scope_id was overridden

This is on my failover WAN interface and the IP is the gateway address as seen on the Status page. I have tried changing the WAN4G interface scope form 56 to 64 but it doesn't seem to have made a difference: