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Date:      Thu, 17 Jan 2008 12:49:54 +0000
From:      Tom Judge <tom@tomjudge.com>
To:        freebsd-net <freebsd-net@freebsd.org>
Subject:   Tuning of IP_MAX_MEMBERSHIPS for IP Multicast Sockets
Message-ID:  <478F4EF2.7060209@tomjudge.com>

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Hi,

On RELENG_6_2 the max multicast memberships per socket 
(IP_MAX_MEMBERSHIPS) is hard coded in sys/netinet/in.h to 20.

Would there be any problem with bumping this to say 40.  The problem is 
our VPN routers running quagga (ospf) seem to be hitting this limit.

I know the problem is fixed on 7+ but would there be any adverse side 
affects of bumping this value up?

Thanks

Tom



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