[    8.854496][  T234] pktgen: Packet Generator for packet performance testing. Version: 2.75
[    8.859484][  T234] modprobe (234) used greatest stack depth: 23976 bytes left
[    9.064611][  T235] pktgen: interface: lo@0 is already stopped
[   10.190082][  T249] pktgen: wrong command format