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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L3431: 	ETHTOOL_LINK_EXT_SUBSTATE_BSI_UNSUPPORTED_RATE                          = 0x2