[ipv6-wg] IPv6 prefix delegation BCOP document available for comments and suggestions

On 29/03/2017 09:02, Gert Doering wrote:
> Hi,
>
> On Wed, Mar 29, 2017 at 08:14:59AM +0200, Jan Zorz - Go6 wrote:
>>> For a PPPoE link these issues are trivially solved to leaving the link
>>> unnumbered.
>>
>> Again, for those, using a PPPoE dialer that would not work. If you are
>> 100% sure that nobody in your network is connecting using a PPPoE
>> dialer,
>
> ... and your CPEs can cope with having no GUA on the WAN link (like,
> for doing DNS lookups, or such).  They *should*, but ...

Hey,

I'm absolutely not a fan of unnumbered links, to make it clear. However, 
CPE with unnumbered WAN link will receive a prefix delegation and from 
this point on, there are many different implementations on different 
CPEs - some will take first /64 and number the loopback, some will not 
and just start numbering L3 ports and so on - but as soon as one 
interface is numbered from PD - CPE uses that to doe DNS and other stuff.

Cheers, Jan

>
>> then yes, go ahead with unnumbered.
>
> Gert Doering
>         -- NetMaster
>