[kolla][wallaby][manila] ambiguous network

Hello All, I configured manually manila on stein with generic driver and driver handle share server true without issues. When I create a share on a share network it creates a service instance and bla bla bla. Now I am using kolla wallaby and share.log gives "ambiguous network error" with generic manila driver and dhss true. It works fine with netapp driver but dhss true with generic is not working anyone. Any suggestion, please? Ignazio