Tailscale requires the TUN/TAP device driver to be loaded to function. This is included in the Sage kernel though
Tailscale requires the iptables binary and shared libraries to be present on the device to function.
These are not included in the stock Kobo Sage image so this repo provides it as
pre-built binaries/libraries in the binaries directory.
This was pulled from the July 5th 2017 build of Raspbian which also bundles the source code. This was done to match the glibc version used in the Sage image.