Re: [homenet] homenet: what now? ... next?

Juliusz Chroboczek <jch@irif.fr> Sun, 03 March 2019 02:09 UTC

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Date: Sun, 03 Mar 2019 03:09:12 +0100
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From: Juliusz Chroboczek <jch@irif.fr>
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Subject: Re: [homenet] homenet: what now? ... next?
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>> Both HNCP and Babel carry their control traffic over link-local IPv6, but
>> they support both IPv4 and IPv6 with almost equal functionality.
>> 
>> (The only significant difference is the treatment of border routers, which
>> are assumed to be doing NAT in IPv4 and stateless routing in IPv6.)

> Oh, I thought the charter was for v6 only.  Did that change, or am
> I misremembering?

Yeah, I never understood that.  The charter is pretty much v6-only, but
I don't recall anyone ever suggesting that we should omit IPv4 support
(but then, I only got involved around the summer of 2014).  RFC 7788 says:

   While RFC 7368 sets no requirements for IPv4 support, HNCP aims to
   support the dual-stack mode of operation, and therefore the
   functionality is designed with that in mind.

while the Babel profile for Homenet says:

   REQ3: a Homenet implementation of Babel SHOULD implement the IPv4
   subset of the protocol

The implementation status is pretty solid:

  - both implementations of HNCP (hnetd and shncpd) have good support for
    IPv4 and DHCPv4;
  - of the six implementations of Babel known to me, four support IPv4
    (babeld, BIRD, FRR and David's Top Secret Implementation).

-- Juliusz