const golang.org/x/sys/unix.ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L3526: 	ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT                        = 0x52