[ 1453.532941] pktgen: Packet Generator for packet performance testing. Version: 2.75
[ 1453.739848] pktgen: interface: lo@0 is already stopped
[ 1454.107851] page_pool_release_retry() stalled pool shutdown: id 11, 1 inflight 60 sec
[ 1454.684069] pktgen: wrong command format