On Linux, how can I (programmatically) retrieve the following counters on a per-interface basis:
- Sent/received ethernet frames,
- Sent/received IPv4 packets,
- Sent/received IPv6 packets.
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Answer
You should be able to do this using iptables rules and packet counters, e.g.
# input and output must be accounted for separately # ipv4, eth0 iptables -I INPUT -i eth0 iptables -I OUTPUT -o eth0 # ipv6, eth0 ip6tables -I INPUT -i eth0 ip6tables -I OUTPUT -o eth0
And to view the stats, parse the output of these:
iptables -L -vxn ip6tables -L -vxn
You should also look up the -Z flag for when you want to reset the counters.