Re: problem statement [was Re: New Version Notification for draft-hinden-ipv4flag-00.txt]

Alejandro Acosta <alejandroacostaalamo@gmail.com> Mon, 20 November 2017 14:54 UTC

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Subject: Re: problem statement [was Re: New Version Notification for draft-hinden-ipv4flag-00.txt]
To: ipv6@ietf.org
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From: Alejandro Acosta <alejandroacostaalamo@gmail.com>
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Date: Mon, 20 Nov 2017 10:54:02 -0400
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Hello,


El 20/11/17 a las 10:33 a.m., Alexandre Petrescu escribió:
>
>
> Le 20/11/2017 à 08:51, Mikael Abrahamsson a écrit :
>> On Mon, 20 Nov 2017, Lorenzo Colitti wrote:
>>
>>> Sure. But you wouldn't need complicated infrastructure for this - if
>>> all that's necessary is to respond to a DHCPv4 request with a canned
>>> "no DHCPv4 here" packet that is always the same, that's a lot easier
>>> to deploy than a full DHCPv4 infrastructure.
>>
>> This functionality doesn't exist today in any access network I know of. 
>
> That may not exist, but the counterpart functionality of blocking all
> that is _not_ IPv4 may exist.
>
> On my enterprise IPv4-only network my laptop's RJ45 leds did not even
> blink this morning.  It was because I had unchecked IPv4 on my
> Windows, because I used in the Terminal Room at IETF, which was IPv6
> only.
>
> I suppose the switches on my enterprise network block all RJ45 that
> dont reply to IPv4, and block them hardly (RJ45 leds are off).

What a interesting situation..., may I ask which switches are you using?
(if you don't want to mention it publicly I accept unicast)



>
> Same laptop connected to a dumb hub had the leds on.
>
> Alex
>
> [snip]
>
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