The object is called EtherTap (as opposed to EtherTapStub, what the former EtherTap was renamed to), and its existance is gated on the linux/if_tun.h header file existing. That's probably overly strict, but it will hopefully be minimally likely to break the build for other systems. Change-Id: Ie03507fadf0d843a4d4d52f283c44a416c6f2a74 Reviewed-on: https://gem5-review.googlesource.com/3646 Reviewed-by: Nathan Binkert <nate@binkert.org> Maintainer: Nathan Binkert <nate@binkert.org>