What's the wireguard-tools

[Hangbin Liu]

Hi Jason,

I'm maintaining the RHEL wireguard-tools rpm. Recently, There is a request to
convert the license tag in the spec file to SPDX format[1]. The current License
tag in wireguard-tools spec file is GPLv2, which is the same with the COPYING
in upstream. But when I searched the src files, I found there are kinds of
license identifier. e.g. GPL-2.0, LGPL-2.1+, MIT, GPL-2.0 OR MIT, etc.

Do you know which one I should use at the end? Should we unify the src files?

[1] https://fedoraproject.org/wiki/Changes/SPDX_Licenses_Phase_1

Thanks
Hangbin