[Rift] IPv4 vs IPv6

Mikael Abrahamsson <swmike@swm.pp.se> Thu, 18 July 2019 04:42 UTC

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Date: Thu, 18 Jul 2019 06:42:28 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: rift@ietf.org
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Subject: [Rift] IPv4 vs IPv6
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Reading https://tools.ietf.org/html/draft-ietf-rift-rift-06, I came across 

"All RIFT routers MUST support IPv4 forwarding and MAY support IPv6 

Reading the charter on https://datatracker.ietf.org/wg/rift/about/ :

"The protocol must support IPv6 and should also support IPv4."

So while I see that technically these two statements aren't in violation 
of each other, it seems the "MAY" for IPv6 in the main architecture 
document seems to violate the spirit of the charter and IPv6 focus in the 
IETF as of the past 5 years.

Could someone please explain the rationale for this?

Mikael Abrahamsson    email: swmike@swm.pp.se