\usepackage{fontspec}
\defaultfontfeatures{Ligatures={Common, Required, Contextual}}
\setmainfont{EB Garamond}
    [ BoldFont = {Linux Libertine O Bold}]

\newcommand{\DUtitletitle}[1]{%
    {\begin{center}\textbf{\textsc{#1}}\end{center}}
 }

\setmonofont{Latin Modern Mono Light}
\newfontfamily\EBGaramond 
  {EB Garamond}
  [ Mapping=tex-text ]

\newfontfamily\EBLigatures 
  {EB Garamond}
  [ Mapping = tex-text
  , Ligatures = 
    { Common
    , Required
    , Contextual
    , Historic } ]

\input{../common/10_fonts.tex}
\let\AltFont\LibertineFont