Thank you Alexandre :) After reading your reply, I immediately installed Wireshark program.
And I can confirm this. Some reply packet's sequence number included ICMP header is same. Is this uIP's bug? Before 5 hours, I let remote PC request ICMP to AVR host. But no reply. But now I can see reply on the PC monitor. But that is similar in situation "50% loss" I think internet line is not responsible for it. Because If I let remote PC request ICMP to my local PC, it gave me perfect reply with 0% loss. Um... so lonely winter... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alexandre Pereira Nunes Sent: Wednesday, January 31, 2007 10:01 PM To: uip-users@sics.se Subject: Re: [uip-users] ICMP is not perfect? ttory wrote: > > Today I eventually succeed in ping to AVR. > > But not perfect. > > This is result. > > ============================================================================ ====== > > 8898 packets transmitted, 4424 received, +4470 duplicates, 50% packet > loss, time 8906068ms > > Rtt min/avg/max/mdev = 0.241/374.254/19908.034/1983.702 ms, pipe 20 > > ============================================================================ ====== > 4424 + 4470 = 8894, not ideal but quite close. However, there's something odd on your configuration, since the host is seeing duplicates. I don't have this behaviour here, I suggest you capture the packets (e.g. with wireshark) and take a closer look to what's happening. - Alexandre
