The issue is the encap/decap pair - like an old circuit model. Do we add the encap/decap function into a Domain doing native SRv6 and the complexity of choosing which to use - into all the vm's? Or do we extend the new SRv6 domain to the legacy infrastructure. If we do this, there is no tunnel. There is no encap/decap pair - you need to proxy for the legacy gear/services. John > On Mar 30, 2017, at 4:38 AM, Mark Townsley <mark@xxxxxxxxxxxx> wrote: > > > >> On Mar 30, 2017, at 12:09 AM, Tim Chown <tjc@xxxxxxxxxxxxxxx> wrote: >> >> Understood, but why do you require direct insertion rather than using encap as per 2460bis? > > The same reason we have MAP-T and 464xlat. > > - Mark > >> >> Tim >> >>> >>> John Leddy >>> Comcast >>> >>> >>> >>> >>> >>> >> >