#!/bin/sh

if [ "$1" = "autoconf" ]; then
	echo yes
	exit 0
fi

if [ "$1" = "config" ]; then
	cat <<"EOF"
graph_title Packets per IP Version
graph_category network
graph_args --base 1000
graph_info This graph shows IPv4/IPv6 packets
graph_vlabel IPv4 (-) / IPv6 (+) packets per ${graph_period}
v4.label IPv4
v4.type DERIVE
v4.min 0
v4.graph no
v6.label Packets
v6.type DERIVE
v6.min 0
v6.negative v4
EOF
	exit 0
fi

netstat -s | awk '
BEGIN {
 v4 = 0
 v6 = 0
}
/ipInDelivers/ {
 gsub("=", "")
 v4 = $2 + $4
}
/ipv6InDelivers/ {
 gsub("=", "")
 v6 += $2
}
/ipv6OutRequests/ {
 gsub("=", "")
 v6 += $2
}
END {
 print "v4.value " v4
 print "v6.value " v6
}
'