Tuning of IP_MAX_MEMBERSHIPS for IP Multicast Sockets

[Tom Judge]

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