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Date:      Sun, 31 Mar 2013 15:43:23 -0400
From:      Lowell Gilbert <freebsd-lists@be-well.ilk.org>
To:        Mario Lobo <lobo@bsd.com.br>
Cc:        freebsd-hackers@freebsd.org, Aryeh Friedman <aryeh.friedman@gmail.com>
Subject:   Re: how to force all packets to be ipv4 not v6
Message-ID:  <44ip479wys.fsf@lowell-desk.lan>
In-Reply-To: <20130331095730.7c8b5e55@papi> (Mario Lobo's message of "Sun, 31 Mar 2013 09:57:30 -0300")
References:  <CAGBxaXnwzFKRi4H-41ZVZSHYB5XxB-uC2dFoqvyW28FXfyF63g@mail.gmail.com> <20130331095730.7c8b5e55@papi>

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Mario Lobo <lobo@bsd.com.br> writes:

> On Sun, 31 Mar 2013 01:20:17 -0400
> Aryeh Friedman <aryeh.friedman@gmail.com> wrote:
>
>> I have a host that for ISP reasons must have a ipv6 addr as well as
>> the ipv4 but the ISP does not offer external ipv6 routing but all the
>> commanes (ssh, ftp, etc.) default to ipv6 and need special options to
>> use 4 is there anyway to force them to always use 4?
>> _______________________________________________
>> freebsd-hackers@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
>> To unsubscribe, send any mail to
>> "freebsd-hackers-unsubscribe@freebsd.org"
>
> A kick and dirty way would be to comment the line:
>
> options 	INET6	# IPv6 communications protocols
>
> from your kernel config and recompile.

That breaks the "must have a ipv6 addr" requirement. 

The way to do this without completely disabling IPv6 used to be to
configure ipv6_prefer, but that appears to have been superseded by
ip6addrctl_policy.



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