[ 5409.274797] Running test [R:12697056 T:23 - Networking TCP: keepalive test - Kernel: 6.0.0] 
[ 5484.496597] device lo entered promiscuous mode 
[ 5520.807003] device lo left promiscuous mode 
[ 5527.179796] device lo entered promiscuous mode 
[-- MARK -- Mon Oct  3 00:45:00 2022] 
[ 5563.436949] device lo left promiscuous mode