1. Create FRR scripts directory

   mkdir -p /etc/frr/scripts
   

2. Place evpn_mh_sph.lua script in /etc/frr/scripts/ directory
3. Place test.py in /home/vyos/
4. Add this line to /usr/lib/python3/dist-packages/vyos/frrender.py directly after output = '!\n' around line 676.

   output += 'zebra on-rib-process script evpn_mh_sph\n'
   

5. Place evpn.mh.sph.j2 into /usr/share/vyos/templates/frr/
6. Place vyos-evpn-sph.service in /etc/systemd/system/
7. Run these commands:

   sudo systemctl daemon-reload
   sudo systemctl enable vyos-evpn-sph.service
   sudo systemctl start vyos-evpn-sph.service
   

8. Reboot VyOS