[ 3711.820746] Running test [R:13291700 T:23 - Networking TCP: keepalive test - Kernel: 5.14.0-245.1965_758819703.el9.s390x]
 [-- MARK -- Thu Jan 26 21:50:00 2023] 
[ 3784.697539] device lo entered promiscuous mode
 [ 3820.817582] device lo left promiscuous mode
 [ 3826.678773] device lo entered promiscuous mode
 [ 3862.802294] device lo left promiscuous mode