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
700		tun2proxy		^1.3
330		quincy		^1.0.0
1.0K	2	ipstack	dev	^1.3
850		netstack-smoltcp	dev	^1.0
600		trippy	dev	^1.2.7