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Re: Generic anycast addresses...

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 30 May 2019 19:11 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "6man@ietf.org" <6man@ietf.org>
Subject: Re: Generic anycast addresses...
In-Reply-To: <20190530152902.l2nmyhadr4e4kt7x@faui48f.informatik.uni-erlangen.de>
References: <D22E680C-3EE3-4AD7-90C0-9339DA2E5A29@fugue.com> <BN6PR21MB04978DB375C05CB3CE4C914EA31F0@BN6PR21MB0497.namprd21.prod.outlook.com> <4EF97F31-1F39-4150-B044-955C46E96FB4@fugue.com> <20190530002833.wfvjfbj2lv2ig664@faui48f.informatik.uni-erlangen.de> <7A9560FC-0393-45DF-8389-B868455AC6DD@fugue.com> <20190530005734.7d2alod2zoaemmhc@faui48f.informatik.uni-erlangen.de> <D6E27B45-437F-45BE-A305-47DD460BCE02@fugue.com> <26144.1559226966@localhost> <1DD451A7-D898-4105-974C-53776A3DA9F2@fugue.com> <20190530152902.l2nmyhadr4e4kt7x@faui48f.informatik.uni-erlangen.de>
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Date: Thu, 30 May 2019 15:10:59 -0400
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Toerless Eckert <tte@cs.fau.de> wrote:
    >> That seems reasonable.  Even if at some point we want to have a
    >> mechanism for allocating ULAs globally, this would just be one that was
    >> allocated globally.

    > I still haven't seen an argument why this anycast scoped app could not
    > simply use an existing ULA prefix. AFAIK, there is nothing prohibiting

there are three reasons I can give:
1) it won't be distinguishable
2) there is some small chance that someone will pick that /48 for it's use.
3) we won't be able to give it intelligent reverse DNS and whois (which we
   *can* with ULA-C or some other GUA space)

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        |    IoT architect   [
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [


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

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