For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:SOGo/openSUSE_Tumbleweed/server:SOGo.repo
zypper refresh
zypper install libffi6-32bit
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:SOGo/openSUSE_Factory/server:SOGo.repo
zypper refresh
zypper install libffi6-32bit
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:SOGo/openSUSE_13.2/server:SOGo.repo
zypper refresh
zypper install libffi6-32bit
For openSUSE 13.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:SOGo/openSUSE_13.1/server:SOGo.repo
zypper refresh
zypper install libffi6-32bit
For openSUSE 11.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:SOGo/openSUSE_11.4/server:SOGo.repo
zypper refresh
zypper install libffi6-32bit