[c-nsp] DHCP_PD usage for PPPoE Access

[Miquel van Smoorenburg]

I've seen 2 of those in normal use.

For example, the Draytek Vigor 120 is a device that bridges PPPoA to 
PPPoE, so that you can terminate the PPP connection on a PC or router 
(or linux-PC-router, whatever). Apparently they sell quite well. We have 
customers using them. And PPPoE -> PPPoE bridging is something that any 
CPE can do (just put it in bridge mode).

And picking the WAN IP address for outgoing connections originating from 
the CPE also isn't all that unexpected.

So, not all that unusual, and certainly not impossible.

BTW, "we" is XS4ALL Internet.

Mike.

On 26-03-11 12:08 AM, Frank Bulk wrote:
> Based on what I've seen of residential IPv6 CE routers, that would be a very
> unusual configuration, in fact, perhaps impossible.
>
> Frank
>
> -----Original Message-----
> From: Miquel van Smoorenburg [mailto:miquels at cistron.nl]
> Sent: Friday, March 25, 2011 4:43 PM
> To: frnkblk at iname.com
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] DHCP_PD usage for PPPoE Access
>
> There's always a customer that bridges the PPP connection to a PC on
> which the connection is terminated.
>
> And though we don't want it, modems will turn up that do IPv6 NAT.
>
> And what address do you think will be used as source address for
> connections originating from the CPE ? Like SIP ?
>
> In all those cases, the WAN address is used for outgoing connections.
>
> Mike.
>
> On 25-03-11 9:16 PM, Frank Bulk wrote:
>> Why would the IPv6 address on the WAN interface ever be seen?  Clients
>> attached to the CE router would be using the delegated prefix...
>>
>> Frank
>>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net
>> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Miquel van
>> Smoorenburg
>> Sent: Friday, March 25, 2011 7:51 AM
>> To: cisco-nsp at puck.nether.net
>> Subject: Re: [c-nsp] DHCP_PD usage for PPPoE Access
>>
>> <snip>
>>
>> The advantage is that you *know* what address or range the CPE has. If
>> it also uses an address gotten via SLAAC on the WAN interface, how are
>> you going to find the customer when the government asks "who is (or was)
>> behind this IPv6 address" and it's from your shared pool ?
>>
>> Mike.
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>