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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2738: 	BPF_HDR_START_MAC                          = 0x0

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)