Re: Adoption call for <draft-hinden-ipv4flag-03>

[Brian E Carpenter <[e-mail]>]

On 24/03/2018 00:57, Peter Hessler wrote:
> I would be involved with an implementation for OpenBSD.
> 
> Based on my understanding of the point of this draft:
> If all RA's set the flag (and we have not yet received an DHCPACK on that
> link) we would probably want to turn off dhcpv4 on the interface, not
> enable any IPv4 link-local IP, and set sole control over resolv.conf to
> slaacd.  If any RA sets the flag to 0, or if we have already received an
> DHCPACK, then we would continue to use the link for IPv6 and IPv4 as
> normal.
> 
> Because we also have a native RA daemon, we would set this option to zero
> by default, and include a description in the documenation that an
> administrator should not set this if there is IPv4 available on the
> link.
> 
> If disabling IPv4 on that link isn't the intention of this draft, I don't
> see why we would bother.

I'd say the intention is to avoid *pointless* IPv4 traffic and its wastage
of air time and battery power, but without preventing useful IPv4 traffic.

   Brian

> 
> -peter
> 
> 
> On 2018 Mar 22 (Thu) at 17:37:02 +0000 (+0000), Ole Troan wrote:
> :I would love to hear from host implementers. If they would implement support for this flag.
> :
> :Best regards,
> :Ole
> :
> :> On 22 Mar 2018, at 16:47, Ole Troan <[e-mail]> wrote:
> :> 
> :> This message starts a two week 6MAN call on adopting:
> :> 
> :>     Title     : IPv6 Router Advertisement IPv4 Unavailable Flag
> :>     Authors   : R. Hinden, B. Carpenter
> :>     Filename  : draft-hinden-ipv4flag-03
> :>     Pages     : 9
> :>     Date      : 2018-03-02
> :> 
> :>     https://datatracker.ietf.org/doc/draft-hinden-ipv4flag/
> :> 
> :> as a working group item. Substantive comments and statements of support
> :> for adopting this document should be directed to the mailing
> :> list. Editorial suggestions can be sent to the authors.  This adoption
> :> call will end on April 5th, 2018.
> :> 
> :> See also the gap analysis from sunset4 on disabling IPv4:
> :> https://tools.ietf.org/html/draft-ietf-sunset4-gapanalysis-09#section-3
> :> 
> :> Regards,
> :> 
> :> Ole Trøan
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