Being able to listen on tailnet addresses was not possible on gokrazy until
Tailscale v1.46 (with TS_DEBUG_USE_NETLINK_NFTABLES=true).
All traffic going through tailscale is secured, so gokrazy programs should
listen on the tailscale interface.
This allows using this (architecture/OS-independent) code without having to
compile other gokrazy code, which is architecture/OS-specific. Specifically,
this makes possible compiling the code on a Mac.