Who pings who ? Who is who ? Assuming both your MTUs are 1500 bytes, greater than 1472 means the payload will not fit in a single IP datagram over a single Ethernet frame. (20IP + 8ICMP + 1472payload = 1500) Your sender will have to fragment and your receiver will have to reassemble. Perhaps one of them, or both, are not enabled or non-feasible. Probably unlikely but, one of them might send jumbo frames ? Wireshark capture, analyze. Breakpoint, debug.
I personally do not know if lwIP handles fragmentation for ICMP payloads in either direction. _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
