"csum set (ip|udp|tcp|sctp|outer-ip) (hw|sw) (port_id)\n"
" Select hardware or software calculation of the"
- " checksum with when transmitting a packet using the"
+ " checksum when transmitting a packet using the"
" csum forward engine.\n"
" ip|udp|tcp|sctp always concern the inner layer.\n"
" outer-ip concerns the outer IP layer in"