[PLUG] what do these network errors mean?

[Michael Whitman <michaelw@palawnet.com>]

Hi all,

I am getting two error repeatedly on my unlogged console.

ip_conntrack : maximum limilt of 3072 entries exceeded

AND

NET: 1535 messages suppressed.


This link
http://netfilter.samba.org/documentation/FAQ/netfilter-faq-3.html
suggests that it is do multicast packets.

I am on the new improved Comcast network, so I assume this has something to 
do with it.
The above link suggests I as the line to my iptables script.

iptables -t mangle -I PREROUTING -j DROP -d 224.0.0.0/8


Does this make sense?  What does the 224.0.0.0/8 represent?  WHat is multicast?

thanks -Mike


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