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Re: [v6ops] IPv6-Only Preferred DHCPv4 option

Jen Linkova <furry13@gmail.com> Wed, 04 December 2019 23:07 UTC

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From: Jen Linkova <furry13@gmail.com>
Date: Thu, 05 Dec 2019 10:07:13 +1100
Message-ID: <CAFU7BAQp2-4EwntFj6Nx+be54-fi+gnQmRgT6yS22p=vYugpzA@mail.gmail.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>
Cc: dhcwg@ietf.org, draft-link-dhc-v6only@ietf.org, V6 Ops List <v6ops@ietf.org>
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Subject: Re: [v6ops] IPv6-Only Preferred DHCPv4 option
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On Thu, Dec 5, 2019 at 5:22 AM Michael Richardson <mcr+ietf@sandelman.ca> wrote:
> A question that we had was whether or not hosts in a IPv6-mostly network
> should configure IPv4-LL addresses in order to speak to legacy-v4-only hosts.

Actually the more I think about it the more I believe the host should
be doing whatever they are doing w/o DHCPv4 presence.
Android does not configure IPv4 link-locals, MacOS does. Making the
same OS behaving differently ("no DHCPv4 whatsoever" vs "DHCPv4 server
responded with IPv6-only Preferred option") might be undesirable. As
an operator I'd expect that IPv6-only capable host would behave the
same way on a dedicated IPv6-only segment and on IPv6-mostly segment.

-- 
SY, Jen Linkova aka Furry

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