Hi Jason,

> I'm not seeing what could be causing this. Could you triple check that
> it really is busted on Debian 8?
I was mistaken, it has nothing to do with Debian 8 specifically. I could 
reproduce it on Arch as well.
When you bring up an interface via wireguard-go and start pinging 
there's a big chance that nothing at all will work starting with commit 
e3134bf6. I've attached a script to reproduce the problem. It doesn't 
always fail, so you may have to run it a few times.