1. Oracle Solaris 11.4 DTrace (Dynamic Tracing) Guide
  2. DTrace Providers
  3. Network and Network Service Protocol Providers
  4. udp Provider
  5. Using the udp Provider
  6. Count of Packets by Host Address

Count of Packets by Host Address

This DTrace one-liner counts UDP received packets by host address:

# dtrace -n 'udp:::receive { @[args[2]->ip_saddr] = count(); }'
dtrace: description 'udp:::receive ' matched 5 probes
^C

  127.0.0.1                                                         7
  fe80::214:4fff:fe8d:59aa                                         14
  192.0.2.35/27                                                    43
  192.0.2.14/27                                                    44
  192.0.2.45/27                                                  3722

The preceding output shows that 7 UDP packets were received from 127.0.0.1, 14 UDP packets from the IPv6 host fe80::214:4fff:fe8d:59aa.