That doesn't really happen in reality. Convergence is fast and as long as your datacenters are topologically disparate enough, you won't have random route sele

That doesn't really happen in reality. Convergence is fast and as long as your datacenters are topologically disparate enough, you won't have random route selection changes outside of failures, in which case, the connection would have failed anyways. :-) And if you're really tricky, you can sync state between POPs and keep a connection moving if your application is aware of the state change. :-)