tun2

tun2 is used at run time in 2 crates. It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps)			tun2 version
340		tun2proxy		^1.3
		quincy		^1.0.0
700	2	ipstack	dev	^1.3
		trippy	dev	^1.2.7
		netstack-smoltcp	dev	^1.0