dragonflow/releasenotes/notes/traceroute-support-18e959fd...

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---
prelude: >
Traceroute support.
features:
- As a Openflow based SDN, traceroute and its back-end network
functionalities are not naturally supported. Dragonflow supports traceroute
base on RFC792, RFC4884, RFC1812 and RFC5508. Traceroute in Dragonflow
cluster works for virtual router and NAT device.
security:
- To prevent DDoS, the rate of responding ICMP error message is controlled by
several configuration options. They are 'dnat_ttl_invalid_max_rate',
'dnat_icmp_error_max_rate', 'router_ttl_invalid_max_rate' and
'router_port_unreach_max_rate'.