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.
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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