DHCP6 Gateway Monitoring isn't working

[meganie]

Hi, I have basically the same problem described here but I'm on 25.1.8

I get a static IPv4 address and IPv6 prefix from my provider.

My WAN settings:
IPv4 Configuration Type: PPPoE
IPv6 Configuration Type: DHCPv6
Request prefix only & Send prefix hint are both checked

Clients are able to connect to websites via IPv6 and my servers are reachable via IPv6 from the internet. Also IPv6 Ping via Interfaces > Diagnotics is working.

But if I want to Enable Gateway Monitoring the gateway is "Offline" and the Gateway monitor isn't starting with this error in the log:

Code Select Expand

/usr/local/etc/rc.syshook.d/monitor/20-recover: The required WAN_DHCP6 IPv6 interface address could not be found, skipping.
Routes are there:

Code Select Expand

ipv6 default fe80::ded2:fcff:fe24:dd60%pppoe0 UGS NaN 1492 pppoe0 WAN
ipv6 2606:4700:4700::1111 fe80::ded2:fcff:fe24:dd60%pppoe0 UGHS NaN 1492 pppoe0 WAN
I also tried the give the gateway an IPv6 address from within my prefix without luck. If I uncheck "Request prefix only" the gateway still gets an fe80 address.