ping with tcpflow and tcpdump

Question

When I use tcpflow icmp and ping I have no answer, but when I use tcpdump icmp aand ping I'm getting answer. Is something wrong with my tcpflow configuration or it should be like that?

Answer 1

When I use tcpflow icmp and ping I have no answer

Uh... How about this: tcpflow captures data from TCP connections and ICMP messages (e.g., pings & etc) are not part of TCP connections.