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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
awk -f /usr/lib/common.awk -f - $* <<EOF
BEGIN {
ipaddr=ip2int(ARGV[1])
netmask=ip2int(ARGV[2])
network=and(ipaddr,netmask)
broadcast=or(network,compl(netmask))
start=or(network,and(ip2int(ARGV[3]),compl(netmask)))
limit=network+1
if (start<limit) start=limit
end=start+ARGV[4]
limit=or(network,compl(netmask))-1
if (end>limit) end=limit
print "IP="int2ip(ipaddr)
print "NETMASK="int2ip(netmask)
print "BROADCAST="int2ip(broadcast)
print "NETWORK="int2ip(network)
print "PREFIX="32-bitcount(compl(netmask))
# range calculations:
# ipcalc <ip> <netmask> <start> <num>
if (ARGC > 3) {
print "START="int2ip(start)
print "END="int2ip(end)
}
}
EOF
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