> Will anyone object if I modify wi(4) so that it does not pass to bpf
> the entire Prism frame, which consists of

> but I omit the data length and the ethernet header, instead?

I'm sorry I didn't check compatibility by myself, but is it compatible
with other BSDs?  I think that DLT_PRISM_HEADER should be compatible among
BSDs at least, and I'm not sure your proposal is either fixing current
incompatibilty or changing current definition.

Atsushi Onoe