frank@Poincare:~$ sudo ifup eth2
ioctl[SIOCSIWPMKSA]: No such device
ioctl[SIOCSIWMODE]: No such device
Could not configure driver to use managed mode
ioctl[SIOCGIFFLAGS]: No such device
Could not set interface 'eth2' UP
ioctl[SIOCGIWRANGE]: No such device
ioctl[SIOCGIFINDEX]: No such device
/etc/wpa_supplicant/functions.sh: line 156:  5582 Segmentation fault      start-stop-daemon --start --oknodo $DAEMON_VERBOSITY --name $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE -- $WPA_SUP_OPTIONS -D $WPA_SUP_DRIVER $WPA_SUP_CONF
wpa_supplicant: /sbin/wpa_supplicant daemon failed to start
run-parts: /etc/network/if-pre-up.d/wpasupplicant exited with return code 1
Internet Software Consortium DHCP Client 2.0pl5
Copyright 1995, 1996, 1997, 1998, 1999 The Internet Software Consortium.
All rights reserved.

Please contribute if you find this software useful.
For info, please visit http://www.isc.org/dhcp-contrib.html

sit0: unknown hardware address type 776
eth1: unknown hardware address type 24
eth2: ERROR while getting interface flags: No such device
sit0: unknown hardware address type 776
eth1: unknown hardware address type 24
Bind socket to interface: No such device
exiting.
Failed to bring up eth2.
frank@Poincare:~$