PREUN

/bin/sh

dkms remove -m vpnclient -v 4.8.01.0640-4mdvmes5.1 --all --rpm_safe_upgrade

POSTIN

/bin/sh

dkms add     -m vpnclient -v 4.8.01.0640-4mdvmes5.1 --rpm_safe_upgrade
dkms build   -m vpnclient -v 4.8.01.0640-4mdvmes5.1 --rpm_safe_upgrade
dkms install -m vpnclient -v 4.8.01.0640-4mdvmes5.1 --rpm_safe_upgrade

# rmmod any old driver if present and not in use (e.g. by X)
rmmod %{module_name} > /dev/null 2>&1 || true