/etc/ethertypes (provided by ebtables) is not relevant to this; fixing
that message doesn't fix the fault.
The problem appears to trigger for unconfigured interfaces; I have an
eth0 that is not configured at boot time (no cable plugged in to the UTP
socket), and 'scapy -h' (which should print out only the usage
information, another issue in itself) fails as described. Give the
interface an address ('sudo ifconfig eth0 10.10.10.10'), and 'scapy -h'
works as desired.
scapy reads /proc/net/route for the interface list, and then tries to
gather data about each one. It consults the Flags field, and will
continue if the RTF_UP flag is set - this is supposed to represent a
state of "route useable" from net/route.h
I'll do some more investigation after the next reboot :-)
--
[feisty] scapy crashes using any version of python
https://bugs.launchpad.net/bugs/96753
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