References: golang.org/x/sys/unix.TUN_F_TSO

const golang.org/x/sys/unix.TUN_F_TSO_ECN

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L6214: 	TUN_F_TSO_ECN = 0x8

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)