post_upgrade() {
  if [ "$(vercmp $2 2011.06.1)" -lt 0 ]; then
    echo "Blacklisting of modules is no longer supported in rc.conf,"
    echo "please add blacklist entries to /etc/modprobe.d/ instead."
  fi
  if [ "$(vercmp $2 2011.07.2)" -lt 0 ]; then
    echo "VERBOSE= in rc.conf no longer has any effect."
    echo "Please append 'quiet' to your kernel command line."
  fi
  if [ "$(vercmp $2 2011.10.1)" -lt 0 ]; then
    echo "If using non-bash-compatible shell, please set LANG in /etc/locale.conf,"
    echo "as LOCALE in /etc/rc.conf no longer works."
  fi
}