Source: http://www.kernel.org/pub/software/network/ethtool/

Files: amd8111e.c
Copyright: 2003, Advanced Micro Devices Inc.
License: GPL-2
This program is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation;
version 2 of the License.
.
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more
details.
.
You should have received a copy of the GNU General Public
License along with this package; if not, write to the Free
Software Foundation, Inc., 51 Franklin St, Fifth Floor,
Boston, MA 02110-1301 USA
.
On Debian systems, the full text of the GNU General Public
License version 2 can be found in the file
`/usr/share/common-licenses/GPL-2'.

Files: de2104x.c
Copyright: 2001, Sun Microsystems ([email protected])
License: GPL-2

Files: e100.c e1000.c
Copyright: 2002, Intel Corporation
License: GPL-2

Files: ethtool-copy.h
Copyright: 1998, David S. Miller ([email protected])
2001, Jeff Garzik <[email protected]>
2001, Sun Microsystems ([email protected])
2002, Intel ([email protected])
2001, Sun Microsystems ([email protected])
2002, Intel ([email protected])
License: GPL-2

Files: internal.h
Copyright: 2001, Sun Microsystems ([email protected])
2002, Intel ([email protected])
License: GPL-2

Files: ethtool.8.in
Copyright: 1999, David S. Miller
2001, Sun Microsystems
2007, 2009, Free Software Foundation, Inc.
License: GPL-2

Files: ethtool.c
Copyright: 1998, David S. Miller ([email protected])
2001, 2008, Sun Microsystems
2001, Jeff Garzik <[email protected]>
2002, Intel
2009, 2010, Solarflare Communications
License: GPL-2

Files: fec_8xx.c
Copyright: 2004, Intracom S.A.
License: GPL-2

Files: ibm_emac.c
Copyright: 2004, 2005 Zultys Technologies
License: GPL-2

Files: igb.c
Copyright: 2007, Intel Corporation
License: GPL-2

Files: ixgb.c
Copyright: 2006, Intel Corporation
License: GPL-2

Files: ixgbe.c
Copyright: 2007, Intel Corporation
License: GPL-2

Files: marvell.c
Copyright: 2004, 2006, Stephen Hemminger <[email protected]>
License: GPL-2

Files: natsemi.c
Copyright: 2001, Sun Microsystems ([email protected])
License: GPL-2

Files: pcnet32.c
Copyright: 2004, IBM Corporation ([email protected])
License: GPL-2

Files: realtek.c
Copyright: 2001, Sun Microsystems ([email protected])
License: GPL-2

Files: rxclass.c
Copyright: 2008, Sun Microsystems
License: GPL-2

Files: sfc.c
Copyright: 2010, Solarflare Communications Inc.
License: GPL-2

Files: stmmac.c
Copyright: 2007-2009, STMicroelectronics Ltd
License: GPL-2

Files: test-cmdline.c, test-common.c
Copyright: 2011, Solarflare Communications Inc.
License: GPL-2

Files: vioc.c
Copyright: 2006, Fabric7 Systems, Inc
License: GPL-2

Files: debian/*
Copyright: 2001-2005, Eric Delaunay <[email protected]>
2006-2010, Anibal Monsalve Salazar <[email protected]>
2008-2011, Ben Hutchings <[email protected]>
License: GPL-2