[11671.626241] Running test [R:12655201 T:19 - Networking TCP: keepalive test - Kernel: 6.0.0-rc6] 
[11771.100538] device lo entered promiscuous mode 
[11809.818764] device lo left promiscuous mode 
[11826.243309] device lo entered promiscuous mode 
[11865.022014] device lo left promiscuous mode