On 2 Oct 2025, at 19:05, Ratheesh Kannoth wrote:

> Hi List,
>
> +++++
> Ovs version 3.6.0.
> Enabled  CONFIG_NET_ACT_CT in  Linux kernel config.
> ++++++
>
>
> Iperf TCP  is working when i apply below commands.
>
> ovs-ofctl del-flows br0
> ovs-ofctl add-flow br0 "priority=20 actions=normal"
>
>
> But it stops working, when I apply below commands.
>
> ovs-ofctl del-flows br0
> ovs-ofctl add-flow br0 "table=0,priority=10,arp,action=normal"
> ovs-ofctl add-flow br0 "table=0,priority=10,icmp,action=normal"
> ovs-ofctl add-flow br0 
> "table=0,priority=100,ip,ct_state=-trk,action=ct(table=1)"
> ovs-ofctl add-flow br0 
> "table=1,in_port=1,ip,ct_state=+trk+new,action=ct(commit),2"
> ovs-ofctl add-flow br0 
> "table=1,in_port=2,ip,ct_state=+trk+new,action=ct(commit),1"
> ovs-ofctl add-flow br0 "table=1,in_port=1,ip,ct_state=+trk+est,action=2"
> ovs-ofctl add-flow br0 "table=1,in_port=2,ip,ct_state=+trk+est,action=1"
>
>
> How to debug this issue ?  any ovs logs that I can enable to check this issue 
> ?

I guess it’s always good to look at the unit tests there are tons of good 
examples.
For example:

https://github.com/openvswitch/ovs/blob/2c4596732bff2dc353341873e3e1403814726eda/tests/system-traffic.at#L6122


//Eelco

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