\documentclass{article}\pagestyle{empty}
\usepackage[libertine={Ligatures=TeX,RawFeature=+onum}]{libertineotf}
\begin{document}
\begin{tabular}{ll}
Standard (+onum)
\verb|\Lnnum{...}|
\verb|\Lpnum{...}|
\verb|\Lcnum{...}|
\verb|\Lonum{...}|
\verb|\Ltonum{...}|
\end{tabular}
\end{document}