[OpenWrt-Devel] [PATCH] libpcap: patch to add limits.h to pcap-usb-linux.c

Michael Holstein moholstein at gmail.com
Mon Aug 20 15:55:57 EDT 2018


> I've been into the LTE modem driver business for a while. Captures from
> end users with some modem hardware/firmware specific issue have often
> been the only way to fully understand a problem

why not just create a bridge and tcpdump that. That code is far lower
in the kernel than the ability to put a USB device in promisc mode
(and I should point out that promic isn't going to matter since
Verizon isn't treating your either end of the IP interface as a
switchport where you'd see L2 traffic in promisc fashion.


brctl addbr bt2
brctl addif br2 usb0
ifconfig br2 up

tcpdump -i bt2 (yada)

Michael Holstein CISSP
moholstein at gmail.com

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