RE: Internet II is coming...

It can be done with IPv4 as-is.

Build an IP-in-IP tunnel. Have the gateways doing encapsulation
to slap higher priority on the packets, so there won't be any
loss. Place a rate limitation on traffic entering the tunnel.

Much better than CBR SVC in many ways.

I know of at least one company which plans to offer that kind of
functionality, at wire speed :slight_smile: