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Re: you have running code ... I-D Action: draft-ietf-6man-ipv6only-flag-03.txt

Jen Linkova <furry13@gmail.com> Mon, 05 November 2018 07:44 UTC

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From: Jen Linkova <furry13@gmail.com>
Date: Mon, 05 Nov 2018 18:44:01 +1100
Message-ID: <CAFU7BAQCaM3rBXXxyqp5H4N27RfBxsi3_ewNvwjx=MHFtpDJyQ@mail.gmail.com>
Subject: Re: you have running code ... I-D Action: draft-ietf-6man-ipv6only-flag-03.txt
To: Lee Howard <lee@asgard.org>
Cc: 6man <ipv6@ietf.org>
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On Fri, Nov 2, 2018 at 5:09 PM Lee Howard <lee@asgard.org> wrote:
> IPv4-only hosts, and dual-stack hosts
> that do not recognize the new
>     flag, may continue to attempt IPv4 operations
>
> If some devices require IPv4 and others disable IPv4, you have lost connectivity between systems on a local network. As written, this is not considered a misconfiguration by the administrator who sets the flag.

If some devices require IPv4 and the administrator implemented
ethertype filtering, blocking IPv4 packets on that LAN segment, you
have lost connectivity between systems on a local network. I'd not
considered this a misconfiguration by the administrator who configured
filtering based on ethertypes.

If some devices require IPv4 and the administrator has control over
some other devices and disabled IPv4 on them (as I did on my
workstation), you have lost connectivity between systems on a local
network. Again, I'd not considered this a misconfiguration by the
administrator who disabled IPv4 on devices which are managed.


-- 
SY, Jen Linkova aka Furry

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