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Document r226775: tell why we omit usbus[0-9]+

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tcpdump can capture packet traces from the usb bus. usbus[0-9] are
registered as ifnet devices so this can work. When these devices come
up, devd was trying to run pccard_ether on those interfaces, which
didn't exist and generated an error.
This commit is contained in:
Warner Losh 2018-11-02 22:15:30 +00:00
parent 50b53a8dc3
commit 7e4161c109
1 changed files with 3 additions and 1 deletions
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4
sbin/devd/devd.conf
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@ -33,7 +33,9 @@ options {
#
# Configure the interface on attach. Due to a historical accident, this
# script is called pccard_ether.
# script is called pccard_ether. We omit the usbus devices because those
# devices are assocaited with the USB Bus and provide a tcpdump point
# to capture USB packets.
#
# NB: DETACH events are ignored; the kernel should handle all cleanup
# (routes, arp cache). Beware of races against immediate create