> The message (paraphrased) is that the capture session could not be
> started because of an unknown physical layer type 0x320. Please
> make sure you have sufficient permissions, and that you have the proper
> interface specified.
...
> No:
> $ tcpdump -i tr0
> tcpdump: unknown physical layer type 0x320
Oh, joy.
It looks as if the ARPHRD_ type for token ring changed from 2.2[.x] to
2.4[.x]; if an ARPHRD_ type changes, libpcap needs to be updated to
reflect that.
(This bug should be marked as a libpcap bug, not a tcpdump or Ethereal
bug; it affects all programs that use libpcap, not just Ethereal or
tcpdump.)
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