Comment # 1 on bug 918142 from Dominique Leuenberger

Please provide log files; the error you 'identified' is not applicable, as we
build NetworkManager with:

pppddir=`ls -1d /usr/%_lib/pppd/2*`
%configure\
    [...] \
    --with-pppd-plugin-dir=$pppddir \

so the plugin directory is correctly identified at build time (and the packae
contains:
%requires_eq    ppp
ensuring, we depend on the version of ppp that was used during build.