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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L947: 	ETHTOOL_FAMILY_NAME                         = "ethtool"

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