[ 3634.791069] Running test [R:13313516 T:20 - Networking TCP: keepalive test -  
Kernel: 6.2.0-0.rc6.22b8077d0fce.45.test.fc38.s390x]                             
[-- MARK -- Tue Jan 31 14:35:00 2023] 
[ 3707.724069] device lo entered promiscuous mode                                
[ 3743.836155] device lo left promiscuous mode                                   
[ 3749.446535] device lo entered promiscuous mode                                
[ 3785.545989] device lo left promiscuous mode                                   
(zcon 14:37:13) [-- MARK --]