redirection semantics
If a server asks a switch to change its forwarding state (e.g., stop forwarding a dest port number), do existing flows break?
- Do we add a “stop giving me dest port X, except for the following ethereal ports” command? (Complex; doesn’t work for start)
- Ostrich Algorithm: let the connections break?
- Do we assume that all switches keep per-flow state, and can redirect new connections without breaking old ones?