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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L1577: 	IFLA_CARRIER_UP_COUNT                      = 0x2f

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