interface XHC20 does not exist

asked 2019-01-26 02:01:56 +0000

chippys64 gravatar image

I've got Wireshark working on my Mojave Mac Mini, but I can't seem to access the USB ports on my High Sierra MacBook Pro. When I try the command sudo ifconfig XHC20 up, after putting in my password I get this error: interface XHC20 does not exist. Any ideas? I've just done a fresh install of High Sierra, and I'm using the nightly build of Wireshark

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"can't seem to access the USB ports" as in "I can't capture on them" or as in "I can try to capture on them but no packets show up"?

Guy Harris gravatar imageGuy Harris ( 2019-01-26 20:14:19 +0000 )edit

I can’t capture on them. Everything I’ve read says runs the sudo, but for some reason that doesn’t work for me. The ports themselves are functional, I just can’t see them in Wireshark

chippys64 gravatar imagechippys64 ( 2019-01-26 22:33:54 +0000 )edit

What does tcpdump -D print?

Guy Harris gravatar imageGuy Harris ( 2019-05-20 04:13:52 +0000 )edit

I can’t capture on them. Everything I’ve read says runs the sudo, but for some reason that doesn’t work for me. The ports themselves are functional

Does "functional" include "tcpdump -D prints them"? If so, what happens if you do tcpdump -i XHC20 -w /tmp/usb.pcap, and try to read /tmp/usb.pcap in Wireshark?

Guy Harris gravatar imageGuy Harris ( 2019-05-20 04:15:21 +0000 )edit
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