Comment 8 for bug 1798475

Seems not meets too much during last 15days:
http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22neutron.tests.fullstack.test_l3_agent.TestHAL3Agent.test_ha_router_restart_agents_no_packet_lost%5C%22%20AND%20message%3A%5C%22FAILED%5C%22

Totally 26 times:
https://review.openstack.org/#/c/625054 14 times, , fix ongoing
https://review.openstack.org/#/c/626830 2 times, fix ongoing
https://review.openstack.org/#/c/626829 2 times, fix ongoing
https://review.openstack.org/#/c/624709 4 times, seems code does not fully accomplished.
https://review.openstack.org/#/c/624708 4 times, seems code does not fully accomplished.

10 times recheck, this case are all pass:
https://review.openstack.org/#/c/627285/

Noting changed recheck, ongoing, seems still does not meet the failure:
https://review.openstack.org/#/c/627738/

still investigating...