Le 30/01/2014 14:03, Ole Troan a écrit :
Alex,

changing the thread since this seems to diverge from getting answers to the 
questions I asked.

cheers,
Ole


On 30 Jan 2014, at 13:55 , Alexandru Petrescu <alexandru.petre...@gmail.com> 
wrote:

Pierre,

Thanks for the reply.

Le 30/01/2014 13:46, Pierre Pfister a écrit :

Le 30 janv. 2014 à 13:38, Alexandru Petrescu
<alexandru.petre...@gmail.com> a écrit :

Le 30/01/2014 13:28, Ole Troan a écrit :
Could it be separate (existing) protocol?

if one had existed, sure. requirements from homenet-arch (I
might have missed some): - must support multi-homing - each
link should be assigned a stable prefix - efficient
allocation of prefixes - should support both IPv4 and IPv6

I meant this:

loosely coupled ---- separate (existing DHCPv6-PD) protocol
triggering route updates to the routing protocol.

yes, DHCP PD comes up as a proposed solution quite frequently. I
just don't see how you can make DHCP PD fulfill the
requirements.

Well it does support multi-homing (Server allocates things to as
many interfaces as needed), each link can be assigned a stable
prefix (provided it triggers updates to the Routing protocol), the
allocation is efficient (Server maintains dynamic databases,
leases) and it supports both IPv4 ('IPv4 subnet allocation'
RFC6656, DHCP transition et alia), and IPv6.

I miss something?

Well, in some cases DHCP seems to work, but not when you start
imagining multi-homed networks with multiple routers. Or maybe you
can tell me how to solve this situation with DHCP:

You have ISP1 connected with Router 1. ISP2 connected with Router 2.
Router 1, Router 2, and a third Router (Router 3), are connected on
the same link. ISP1 is delegated the prefix A/56 to Router 1. ISP2
is delegating the prefix B/56 to Router 2.

A host is connected behind Router 3.

Bear with me for a moment... is this topology what you meant?


      ISP1               ISP2
       |                  |
    +-------+          +-------+
    |Router1|A/56      |Router2|B/56
    +-------+          +-------+
       |                  |
     --+-------+----------+--
               |
               |
           +-------+
           |Router3|
           +-------+
               |
             +----+
             |Host|(how can it get an address from A, and from B)
             +----+

In this setting the Router3 could run two DHCPRelay processes, and Router1 and 2 would be Servers.

This would allow Host to obtain an address from each (==multi-homed).

Alex



How can it get addresses from both prefixes ?

Before I try to figure it out - is the above topology what is meant? Something 
I misplaced?

Alex


Cheers,

Pierre



Alex


cheers, Ole



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