no connection to CAPsMAN over a Wireguard Tunnel

I have a CAPSMAN running on Router1 at SiteA. It works flawlessy with every other CAP in Site A

I have an additional CAP running on Router 2 on Site B

If I use a tunnel GRE over ipsec to connect Router1 to Router 2, the CAP on Router2 connect to the CASPMAN in SiteA and everything works flawlessy.

If I try to use a wireguard tunnel between Router 1 and Router 2, the CAP present on Router 2 show the message “no connection to CAPsMAN”, even if the Wireguard tunnel work flawlessy for everything else.

Does wireguard tunnels doesn’t support something required for the CAPSMAN ?

Just solved was a routing issue