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Avery Pennarun 5041800ac6 wgengine/tstun/faketun: it's a null tunnel, not a loopback. ... At some point faketun got implemented as a loopback (put a packet in from wireguard, the same packet goes back to wireguard) which is not useful. It's supposed to be an interface that just sinks all packets, and then wgengine adds *only* and ICMP Echo responder as a layer on top. This caused extremely odd bugs on darwin, where the special case that reinjects packets from local->local was filling the loopback channel and creating an infinite loop (which became jammed since the reader and writer were in the same goroutine). Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>		6 years ago
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faketun.go	wgengine/tstun/faketun: it's a null tunnel, not a loopback.	6 years ago
tun.go	wgengine/tstun: fix typo in comment	6 years ago
tun_test.go	wgengine/tstun/faketun: it's a null tunnel, not a loopback.	6 years ago