RE: [DNA] L2 link and L3 link

[Alper Yegin <alper.yegin@samsung.com>]

Greg,

> As an aside, It's interesting that Bernard mentioned PPPoE.
> 
> PPPoE is inherently an L2 mechanism but defined by IETF.
> 
> Do L3 DNA procedures apply here?
> 
> It may be that there's no L3 router advertised on the 'Ethernet'
> link. So existing router discovery procedures don't necessarily
> apply.
> 
> Should we rely on PADI messages to determine reachability,
> and then provide (authoritative) link hints when IP6CP
> has gone to open state?

When PPP is used, usually the IP address is configured as part of the
link establishment. In that case, as soon as link is up, there isn't
really much left for DNA to worry about. Please see the dna-l2-hints
draft. We covered this with the 3gpp2 architecture.

Alper