From owner-freebsd-hackers@FreeBSD.ORG  Mon Oct 27 16:14:32 2014
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Date: Mon, 27 Oct 2014 17:14:26 +0100 (CET)
From: Mohacsi Janos <mohacsi@niif.hu>
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To: "Alexander V. Chernikov" <melifaro@FreeBSD.org>
Subject: Re: faith(4) / faithd(8) removal
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Dear Alexander, 
On Mon, 27 Oct 2014, Alexander V. Chernikov wrote:

> Hello everyone.
>
> I'd like to remove faith (IPv6/v4 translator) from base.
>
> * It does not seem like a proper way to translate between IPv4/IPv6 traffic.

It is a proper way to translate between IPv4 and IPv6 TCP as defined in

https://tools.ietf.org/html/rfc3142

However if there no need for TRT among the FreeBSD users it is completely 
acceptable to remove from the system.

Best Regards,
 		Janos Mohacsi

>  There are several well-documented (and already implemented) technologies:
>    Stateful/stateless NAT64 (rfc 6146,  6145), 464XLAT (6877).
>    Unfortunately, we don't have in-kernel NAT64 implementation, but there 
> are
>   some userland-base one, like net/tayga64.
> * It does complicate IPv6 processing path
> * It does not seem to be used: last non-trivial commit was 10 years ago 
> (126781).
> * OpenBSD removed it in 2013: 
> http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/net/Attic/if_faith.c
>
> If there are no objections I'll remove it in a week.
>
>
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