Re: IPv4 traffic on "ietf-v6ONLY"

On Wed, Nov 15, 2017 at 7:02 PM, Rajiv Asati (rajiva) <rajiva@cisco.com> wrote:
>
> Of course, a DHCPv4 option conflicts with the goal of some people to have
> no IPv4 related infrastructure at all.
>
>
>  Perhaps, define a DHCPv6 option to convey v6-only, for which the client
> interpretation should be to suppress v4.

Can someone remind me what problem we are trying to solve?
W

>
> Although this will be at the cross road with allowing client’s wishes to use
> v4 LL for whatever useless/useful traffic, it would be a reasonable
> deployment policy to enforce.
>
> We have to remember that allowing this would continue to hurt WLAN (not
> wired LAN) for obvious reasons - radio bandwidth.
>
> During one of ciscolive conferences, i recall having observed lots of
> useless v4 traffic (e.g. discovery) on WLAN.  Andrew (cced) may remember
> more details.
>
> Cheers,
> Rajiv
>
> On Nov 15, 2017, at 5:48 AM, Philip Homburg <pch-ipv6-ietf-4@u-1.phicoh.com>
> wrote:
>
> Does that return us to the question of how to tell hosts that IPv4
>
> doesnt live here, and to stop trying?
>
>
> The safest option to do that is a DHCPv4 option that says 'no IPv4 service
> here, go away'.
>
> Any network that has IPv4 production traffic already has to protect against
> rogue DHCPv4 servers.
>
> Of course, a DHCPv4 option conflicts with the goal of some people to have
> no IPv4 related infrastructure at all.
>
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-- 
I don't think the execution is relevant when it was obviously a bad
idea in the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair
of pants.
   ---maf