Re: [lwip-users] driver clarifications for ipv6: loopback, multicast

[Sergio R. Caprile]

Well, that looks like the usual vendor "features" for that particular 
vendor. I don't have a full duplex mode nor a loopback of sent packages 
in my controller chip and I'm happy using lwIP with my driver.
I think lwIP doesn't even think the driver would dare to send back a 
sent package; but I haven't checked, I wouldn't think of it. It doesn't 
look like normal ethernet (or any layer-2 btw) behaviour. AFAIK it is 
customary for the comm controller to remove those artifacts when 
attached to a half-duplex media. The upper layers shouldn't have to deal 
with layer-1 issues.

I can't help you with multicasts.
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