I am using the command sudo tcpdump -n -i br-lan -e 'arp or icmp' in the openwrt platform to get to see the packets.
d1 and d2 are connected to a router r1.
192.168.1.102 d1
192.168.1.193 d2
192.168.1.1 r1
I am pinging d2 from d1 and checking the tcpdump at the router.
Pinging is working fine and i get to see the tcpdumps.
However some of the outputs are as follows:
Yes, Line 1 and 2 state that: the device 192.168.1.1 is informing device 192.168.1.193 - that 192.168.0.11 is not reachable via 192.168.1.1. It used an ICMP Packet Type 3-0 (Destination Network Unreachable) message.
(Also, moving thread to Installing and Using OpenWrt.)
Yes, going on your past threads, you're trying to forge the ARP tables for some as-of-yet unexplained reason in an as-of-yet undefined topology. The ICMP packets you're seeing are saying that the combination of your forged ARP tables and routing information is not valid for delivery of the packet.