keshav@ucbarpa.Berkeley.EDU (Keshav) (11/22/89)
I get duplicate ping packets over a microwave relay that links two ethernets. Most, but not all, ICMP ping packets have duplicates, and the interval between two replies varies from 5 to 60 ms. The problem occurs between any two machines that are on opposite ends of the link. The link itself is rather dumb: it provides a virtual extension of the ethernet cable across a distance of about a mile. Could the problem be due to the CSMA/CD protocol? Or is it some known bug in TCP? All opinions welcome. keshav