help: Set SIP conntrack options
end: reload=0
  sdm=2
  if [ -f /sys/module/nf_conntrack_sip/parameters/sip_direct_media ]; then
    sdm=$(sudo cat /sys/module/nf_conntrack_sip/parameters/sip_direct_media)
  fi
  if [ -n "$VAR(./enable-indirect-media)" ]; then
    indirectmedia='sip_direct_media=0'
    if [ $sdm -ge 1 ]; then reload=1; fi
  else
    if [ $sdm -eq 0 ]; then reload=1; fi
  fi

  sds=2
  if [ -f /sys/module/nf_conntrack_sip/parameters/sip_direct_signalling ]; then
    sds=$(sudo cat /sys/module/nf_conntrack_sip/parameters/sip_direct_signalling)
  fi
  if [ -n "$VAR(./enable-indirect-signalling)" ]; then
    indirectsignalling='sip_direct_signalling=0'
    if [ $sds -ge 1 ]; then reload=1; fi
  else
    if [ $sds -eq 0 ]; then reload=1; fi
  fi

  options=$(grep -s "options nf_conntrack_sip $indirect-media $indirect-signalling" /etc/modprobe.d/options)
  if [ -z "$options" ] && [ -f /etc/modprobe.d/options ]; then
    sudo sed -i '/nf_conntrack_sip/d' /etc/modprobe.d/options
  fi

  if [ -n "$indirectmedia" ] || [ -n "$indirectsignalling" ]; then
      sudo sh -c "echo options nf_conntrack_sip $indirectmedia $indirectsignalling >> /etc/modprobe.d/options "
  fi

  if [ $reload -eq 1 ]; then
    sudo modprobe -r nf_nat_sip nf_conntrack_sip
    sudo modprobe nf_conntrack_sip
    sudo modprobe nf_nat_sip
  fi