This match is used for accounting traffic for all hosts in
defined network/netmask. 

Features:
- long (one counter per protocol TCP/UDP/IMCP/Other) and short statistics
- one iptables rule for all hosts in network/netmask
- loading/saving counters (by reading/writting to procfs entries)

Example usage:

account traffic for/to 192.168.0.0/24 network into table mynetwork:

# iptables -A FORWARD -m account --aname mynetwork --aaddr 192.168.0.0/24

account traffic for/to WWW serwer for 192.168.0.0/24 network into table 
  mywwwserver:

# iptables -A INPUT -p tcp --dport 80 
  -m account --aname mywwwserver --aaddr 192.168.0.0/24 --ashort
# iptables -A OUTPUT -p tcp --sport 80
  -m account --aname mywwwserver --aaddr 192.168.0.0/24 --ashort    
  
read counters:

# cat /proc/net/ipt_account/mynetwork
# cat /proc/net/ipt_account/mywwwserver

set counters:

# echo "ip = 192.168.0.1 packets_src = 0" > /proc/net/ipt_account/mywwserver
  
Webpage: 
  http://www.barbara.eu.org/~quaker/ipt_account/  
