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Date:      Mon, 5 Sep 2011 16:18:27 -0400
From:      Arnaud Lacombe <lacombar@gmail.com>
To:        "K. Macy" <kmacy@freebsd.org>
Cc:        freebsd-net@freebsd.org
Subject:   Re: No IPFW binary compat across versions ?
Message-ID:  <CACqU3MUjjYXabmYZtivDQKJ2v6HcWyo1_3AuTyyjN1o5%2BV6hhg@mail.gmail.com>
In-Reply-To: <CAHM0Q_N0UZu0tvqL6TiCOmJfHAt4sBtWM1abE%2BuJPS9ubARrfg@mail.gmail.com>
References:  <CACqU3MXVLjJvF6RGqpC-hvnbTgb-uNC7V0AP0ofXDRs4n7Nmtg@mail.gmail.com> <CAHM0Q_N0UZu0tvqL6TiCOmJfHAt4sBtWM1abE%2BuJPS9ubARrfg@mail.gmail.com>

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Hi,

On Mon, Sep 5, 2011 at 3:14 PM, K. Macy <kmacy@freebsd.org> wrote:
> -STABLE only implies that the ABI does not change during that release
> line. It makes no guarantees when moving from one branch to the next.
>
IIUC, FreeBSD does not provide binary backward compatibility between
version at all, is that it ?

Thanks,
 - Arnaud

> On Mon, Sep 5, 2011 at 8:31 PM, Arnaud Lacombe <lacombar@gmail.com> wrote=
:
>> Hi,
>>
>> It would seem that the ipfw binary from a 7.4 install is not
>> compatible with the in-kernel implementation of ipfw from 8-STABLE.
>> The following command returns junk:
>>
>> # uname -a
>> FreeBSD =A08.2-STABLE FreeBSD 8.2-STABLE #0: Mon Sep =A05 13:26:22 EDT 2=
011
>>
>> # ipfw show
>> 65535 79609572473438209 9528064790723821568 count ip from any to any
>> # ipfw show
>> 65535 80229898894966785 10211949650127093760 skipto 20069 ip from any to=
 any
>> # ipfw show
>> 65535 81461570961408001 11566216593050435584 divert 20069 ip from any to=
 any
>> # ipfw show
>> 65535 81826462792941569 11967688918742073344 tee 20069 ip from any to an=
y
>> # ipfw show
>> 65535 85659197118611457 16196106284901072896 =A0altq ?<301> ip from any =
to any
>> # ipfw show
>> 65535 86531998897668097 17160025365645623296 ** unrecognized action 64
>> len 19 =A0ip from any to any
>> # ipfw show
>> 65535 127737816351244289 7272335601653776384 ** unrecognized action
>> 158 len 19 =A0ip from any to any
>>
>> However as the 8-STABLE kernel have COMPAT_FREEBSD7 enabled, I would
>> not expect this to happen...
>>
>> Thanks,
>> =A0- Arnaud
>> _______________________________________________
>> freebsd-net@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-net
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>>
>



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