OPNsense 22.1.10 extra IPv6 hop

[staticznld]

I am running OPNsense 22.1.10, requesting prefix through PPPoE “/48”.

Everything is working fine clients can get an IPv6 address through SLAAC.
When I was trying to run Wireguard over IPv6 and it didn’t connect.

In Wireguard client i was trying to connect to the IPv6 address that was on the LAN site of my OPNsense install.
 
After some digging around I found out that the Wireguard interface IPv6 address was showing up in an traceroute from the internet to my LAN IPv6 address.
Also when I run a traceroute “from the internet” to any of my clients in my LAN is see the extra hop with the IP address of the Wireguard interface.

When restarting Wireguard the extra hop from the traceroute was gone, and I am able to connect to Wireguard over IPv6.

How is it possible that this extra hop is added after reboot?