From: ebiederm@xmission.com (Eric W. Biederman)
Date: Thu, 27 Sep 2007 10:16:37 -0600

quoted text
> 
> I guess in particular IFF_LOOPBACK means that all packets from
> a device will come right back to the current machine, and go
> nowhere else.
> 
> That usage sounds completely different then the CAN usage which
> appears to mean.  Broadcast packets will be returned to this machine
> as well as being sent out onto the wire.

It's bogus and it should be removed from the CAN code, they
can add some other attribute to achieve their goals.
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