Re: draft-bourbaki-6man-classless-ipv6-00

[Tom Herbert <[e-mail]>]

On Sat, Jun 3, 2017 at 8:47 AM, Nick Hilliard <[e-mail]> wrote:
> Tom Herbert wrote:
>> Thanks for the draft. I think the case will be bolstered with some
>> real examples as to how fixed /64 interface addressing has proven to
>> be problematic. Using identifier/locator split in addresses as I
>> mentioned is one example. I suspect there are more that could be
>> documented.
>
> Tom,
>
> let's say your device is assigned a /64, e.g. either on a mobile network
> or via PD.  Your device sits between upstream and downstream devices and
> passes traffic between upstream and downstream.
>
> Forcing /64 means that your device is limited to bridging mode, because
> downstream devices would not be permitted to assign a netmask of longer
> than /64.  This could seriously adversely impact on network connectivity
> options for downstream devices.  E.g. multiple networks sitting on some
> homenet.
>
> Would this fall into the category of examples that you're talking about
> here?
>
I think this is too much a generalization trying to make it a "one
size fits all" problem. I'm not going to use my phone as a router into
my enterprise network, I don't see any reason to have it delegate some
complex network hierarchy. We need the ability to tether a small
number of devices, anything more than we are talking about a different
type of device.

Tom



> Nick