Hi,
I have a kind cluster with Antrea installed. Since I want to use the conntrack
event listener to track the creation/termination of connections, I installed
conntrack CLI in one of Antrea-agen pods.
When I used command “conntrack -E” to listen to events for iperf3 traffic, I
found that not all of the UpdateEvent for tcp state changes can be monitored.
However, I can see the tcp state is changed to “Time_wait” in the conntrack
table (using “conntrack -L”). I can see all the UpdateEvents for a connection
if I use “wget”. Not sure if it is the expected behavior?
The only difference I can notice is that the connection of the iperf3 flow has
a zone=65520, which is the zone used by Antrea.
I also created an issue for this question in ovs-issues
(https://github.com/openvswitch/ovs-issues/issues/282). Any comment or
suggestion is appreciated. Thanks.
Best,
Yun-Tang
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