license: change to GPL-2+

Author: nadzyah

COPYRIGHT

@@ -0,0 +1,23 @@
+Copyright (C) 2025 Rust Swifties Team
+
+This project is a Rust rewrite of net-tools, based on the original
+net-tools project available at: https://sourceforge.net/projects/net-tools/
+
+Original net-tools copyright holders:
+Copyright (C) 1988-1994 MicroWalt Corporation
+Copyright (C) 1995-1996 Bernd Eckenfels
+Copyright (C) 1997-2000 Andi Kleen
+Copyright (C) 1997-2000 Donald Becker
+
+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; either version 2 of the License, or
+(at your option) any later version.
+
+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 program; if not, see <https://www.gnu.org/licenses/>.

Cargo.toml

@@ -6,7 +6,7 @@ authors = [
   "Nadzeya Hutsko <[email protected]>",
   "Lena Voytek <[email protected]>",
 ]
-license = "MIT"
+license = "GPL-2.0-or-later"
 
 [dependencies]
 clap = { version = "4.5", features = ["derive"] }