No you cannot config DAD (fast-hello) multi link with PO.(LACP)
Note:- you can run multi DAD (fast-hello) up to 4 between two stack SW
NOTE:- DAD can run with PO with PO (e-pagp), you can config PO(e-pagp) bundle multi link together then run DAD over it
Here DAD is not fast-hello it e-pagp
