Re: Amiga: Writes to Zorro III cards

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On Wed, 1 Apr 2020, Stefan Reinauer wrote:

When it fails/works, it fails/works consistently across several 
rmmod/insmod cycles.

That implies incomplete hardware initialization or some other bug in the 
driver initialization code.

(I see arp requests coming in on the Amiga in tcpdump, but they are 
never answered)

If packets are arriving at the interface but the kernel ignores them, it 
suggests that the packets are corrupt (e.g. invalid frame checksum).

You can check for corrupted packets with a network analyzer like 
Wireshark. On a small system I would capture some traffic with 'tcpdump -i 
eth0 -s0 -w traffic.pcap' and then move the pcap file to a host 
with Wireshark installed.



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