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Date: Tue, 22 Feb 2011 11:48:20 -0500
From: Etienne Robillard <erob@gthcfoundation.org>
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To: Sergey Kandaurov <pluknet@gmail.com>
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Cc: nvass@gmx.com, freebsd-stable@freebsd.org
Subject: Re: Problem with ipfw and libalias on 8.2-PRERELEASE
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On 02/22/2011 04:28, Sergey Kandaurov wrote:
> On 22 February 2011 00:30, Etienne Robillard<erob@gthcfoundation.org>  wrote:
>    
>> Hi,
>>
>> I'm unable to load the ipfw module in 8.2-PRELEASE. i think
>> this may be due to ABI changes at the kernel level. ,
>>
>> $ sudo kldload /boot/kernel/ipfw.ko
>> $ dmesg
>> ...
>> KLD ipfw.ko: depends on libalias - not available or version mismatch
>> linker_load_file: Unsupported file type
>>
>> $ uname -a
>> FreeBSD marina.localdomain 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE #1: Wed Feb
>> 16 03:38:23 EST 2011
>> root@:/usr/local/freebsd8/src/sys/amd64/compile/GENERIC.ndebug  amd64
>>
>> could there be a more precise explanation?
>>
>>      
> In recent 8.x you first need to kldload libalias.ko.
> It was broken in 8 since MFC r200636 (and still broken in head),
> where ipfw.ko includes ipfw_nat, which depends on libalias.
>
> I think either ipfw should un-include ipfw_nat stuff,
> or pollute self more and take explicit dependency on libalias.
>
>    

Thanks that fixed it.  I recall having tried to manually load 
libalias.ko but after a
full buildworld it works fine.