The multiple vApp on different subnet (e.g. 192.168.0.x & 192.168.1.x) within the same vDC are now routable with your suggested setting. thx
But if I create another vDC, under this new vDC I have deployed another set of vApp on those 2 subnets too (e.g. 192.168.0.x & 192.168.1.x). Is it possible to isolate these two vDC, so that they will not communication to the vApp in different vDC?
e.g. vApp(192.168.0.x) on vDC#1 cannot reach vApp(192.168.0.x) on vDC#2. Since in my setup, I found that those vApp can reach each other between two vDC.