$ flowdumper -e '($exporterip eq "192.168.251.43") && ($input_if == 6)' -c ../flows.current
FLOW
  index:          0xc7ffff
  router:         192.168.251.43
  src IP:         64.12.27.230
  dst IP:         192.168.252.188
  input ifIndex:  6
  output ifIndex: 9
  src port:       5190
  dst port:       2877
  pkts:           11
  bytes:          2291
  IP nexthop:     192.168.254.1
  start time:     Mon Feb 25 16:29:47 2002
  end time:       Mon Feb 25 16:32:42 2002
  protocol:       6
  tos:            0x0
  src AS:         0
  dst AS:         0
  src masklen:    0
  dst masklen:    24
  TCP flags:      0x1a (SYN|ACK|PUSH)
  engine type:    1
  engine id:      1
...snip...
matched 19333 of 27695 flows
$