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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1723: 	IFLA_MACVLAN_FLAGS                         = 0x2

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