Based on the conversation from #5 (comment) - this changes innernet's behavior on Linux from automatically falling back to the userspace, instead requiring --backend userspace to be specified.
This should help people avoid weird situations in environments like Docker.
This is a stop-gap CSRF protection mechanism from unsophisticated attacks. It's to be considered a temporary solution until a more complete one can be implemented, but it should be sufficient in most cases for the time being.
See https://github.com/tonarino/innernet/issues/38 for further discussion.
wgctrl-rs will now look for the WG_USERSPACE_IMPLEMENTATION or
WG_QUICK_USERSPACE_IMPLEMENTATION environment variables to
override the default wireguard-go userspace implementation choice.
Closes#34
Jake McGinty