[ 5356.459455] Running test [R:13147394 T:24 - Networking TCP: keepalive test - Kernel: 6.1.0] [ 5431.869146] device lo entered promiscuous mode [ 5468.089168] device lo left promiscuous mode [ 5473.972712] device lo entered promiscuous mode [ 5510.181141] device lo left promiscuous mode