I have created a TCP dumpfile from both a working car where these error are not present and this one where I have problems. I have filtered on the ICMP and locate pings to 192.168.0.1 (router) from 192.168.0.10 Win 10, nothing else connected.
I can see talat the car with problems have constant unreachable UDP port when ping, along with many that works.
On the car where we have no problems there are no unreachable at all.
I am unable to attach dump files but essentially:
18:55:16.951113 IP 192.168.0.10 > 192.168.0.1: ICMP echo request, id 256, seq 9197, length 40
18:55:16.951249 IP 192.168.0.1 > 192.168.0.10: ICMP echo reply, id 256, seq 9197, length 40
18:55:17.922436 IP 192.168.0.10 > 192.168.0.1: ICMP 192.168.0.10 udp port 61194 unreachable, length 217
18:55:17.953224 IP 192.168.0.10 > 192.168.0.1: ICMP echo request, id 256, seq 9198, length 40
18:55:17.953344 IP 192.168.0.1 > 192.168.0.10: ICMP echo reply, id 256, seq 9198, length 40
18:55:18.955299 IP 192.168.0.10 > 192.168.0.1: ICMP echo request, id 256, seq 9199, length 40
18:55:18.955514 IP 192.168.0.1 > 192.168.0.10: ICMP echo reply, id 256, seq 9199, length 40
18:55:19.448001 IP 192.168.0.10 > 192.168.0.1: ICMP 192.168.0.10 udp port 52671 unreachable, length 101
18:55:19.957399 IP 192.168.0.10 > 192.168.0.1: ICMP echo request, id 256, seq 9200, length 40
18:55:19.957538 IP 192.168.0.1 > 192.168.0.10: ICMP echo reply, id 256, seq 9200, length 40
18:55:20.959429 IP 192.168.0.10 > 192.168.0.1: ICMP echo request, id 256, seq 9201, length 40
which is not found in the working setup