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Date:      Thu, 13 Apr 2006 09:07:01 -0400
From:      Stephen Clark <Stephen.Clark@seclark.us>
To:        Bruce M Simpson <bms@spc.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: IP_MAX_MEMBERSHIPS
Message-ID:  <443E4CF5.6000901@seclark.us>
In-Reply-To: <20060413063604.GB94628@spc.org>
References:  <443DB8A5.1020006@seclark.us> <20060413063214.GA94628@spc.org> <20060413063604.GB94628@spc.org>

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Bruce M Simpson wrote:

>On Thu, Apr 13, 2006 at 07:32:14AM +0100, Bruce M Simpson wrote:
>  
>
>>On Wed, Apr 12, 2006 at 10:34:13PM -0400, Stephen Clark wrote:
>>    
>>
>>>Can anyone tell me why the maximum number of members in a multicast 
>>>group is set at
>>>20?
>>>Are there issues with increasing this number?
>>>      
>>>
>
>Ah. Your original question appears not to have been answered. My bad.
>
>I do not see a limit on the members of a multicast group on FreeBSD
>either for individual sockets or for multicast forwarding based on my
>reading of the source code.
>
>BMS
>
>  
>
 From FreeBSD 6.0 prerelease also in 4.9
/usr/src/sys/netinet/in.h
#define    IP_MAX_MEMBERSHIPS    20    /* per socket */

Steve

-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)






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