Owen DeLong via NANOG <nanog@nanog.org> writes: > Virtually every useful flow of packets in one direction requires a > relatively symmetrical flow of packets in the other direction.
Packet captures are useful without anything being returned. It's not uncommon to use some sort of unidirectional tunnel to transport captures over an IP-network. Same goes for logging. Traditional udp syslog is a one-way street. And I'm sure there are more examples. Not that I think it matters in this discussion, which appears more circular than bidirectional. Bjørn
