feat(tun): route all on linux #2271

Job	Run time
x86_64-unknown-linux-gnu	5m 23s
i686-unknown-linux-gnu	5m 23s
x86_64-unknown-linux-gnu-static-crt	5m 23s
x86_64-unknown-linux-musl	5m 26s
i686-unknown-linux-gnu-static-crt	5m 24s
aarch64-unknown-linux-gnu	5m 25s
armv7-unknown-linux-gnueabi	5m 23s
armv7-unknown-linux-gnueabihf	5m 23s
aarch64-unknown-linux-gnu-static-crt	5m 25s
aarch64-unknown-linux-musl	5m 25s
armv7-unknown-linux-gnueabi-static-crt	5m 24s
armv7-unknown-linux-musleabihf	5m 25s
x86_64-pc-windows-msvc	5m 21s
i686-pc-windows-msvc	5m 23s
x86_64-pc-windows-msvc-static-crt	5m 21s
i686-pc-windows-msvc-static-crt	5m 23s
x86_64-apple-darwin	5m 26s
aarch64-apple-darwin	5m 26s
x86_64-apple-darwin-static-crt	5m 29s
aarch64-apple-darwin-static-crt	5m 24s
Docker Image	1s
Release	1s
	1h 48m 4s

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