when(addr1.getHostAddress()).thenReturn("10.0.0.1");

        Address addr2 = mock(Address.class);
        when(addr2.getHostAddress()).thenReturn("10.0.0.2");

        when(nameSvc.getAllByName(eq("failing.server"), eq(true))).thenReturn(new Address[] { addr1, addr2 });

        SmbTransportPoolImpl poolSpy = spy(pool);
        when(ctx.getTransportPool()).thenReturn(poolSpy);

        // Both transports fail