【问答题】
A、ip verify unicast source reachable-via any B、ip verify unicast reverse-path C、ip verify unicast reverse-path loose D、ip verify unicast reverse-path strict
A、A.ip verify unicast source reachable-via any B、B.ip verify unicast reverse-path C、C.ip verify unicast reverse-path loose D、D.ip verify unicast reverse-path strict