Re: [dhcwg] [Last-Call] Iotdir last call review of draft-ietf-dhc-v6only-03

Michael Richardson <mcr+ietf@sandelman.ca> Mon, 29 June 2020 03:25 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Jen Linkova <furry13@gmail.com>, "iot-directorate\@ietf.org" <iot-directorate@ietf.org>, "dhcwg\@ietf.org" <dhcwg@ietf.org>, "last-call\@ietf.org" <last-call@ietf.org>
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Date: Sun, 28 Jun 2020 23:25:54 -0400
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Subject: Re: [dhcwg] [Last-Call] Iotdir last call review of draft-ietf-dhc-v6only-03
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Jen Linkova <furry13@gmail.com> wrote:
    > - check if making host a dual-stack solves the issue (either by moving
    > the host to a dual-stack segment or by changing DHCPv4 client config)

I think, if the DHCPv4-server can be told to selectively ignore the
dhc-v6only option for that host, that we can make it dual-stack without
touching the client config.

The host would think it's on a network that doesn't offer IPv6-only.

So I think that the option makes troubleshooting easier :-)

    > If an engineer is not willing to diagnose such a complex issue they
    > are welcome to configure their DHCP servers so they do not respond
    > with the option.
    > Problem solved.

--
Michael Richardson <mcr+IETF@sandelman.ca>ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-